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Brackish Water Aquarium

BRACKISH WATER AQUARIUM

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It is not a new concept, but one that has not been readily used by many aquarists.  That is changing and more and more aquarists are finding an interest in this natural method of filtration for their aquarium.

Mangroves are plants that can live in freshwater swamps and brackish or saltwater areas along shorelines.  They have the ability to live in saltwater by straining freshwater from the saltwater through their roots.

                                   

Batanta Island Rainbowfish -- Melanotaenia misoolensis

In October 1948, a Dutchman by the name of Lieftinck collected some rainbowfishes from a tributary of the Tama River near Fakal Village on the New Guinea Island of Misool. Misool Island is about 70 kilometres south-west of the Vogelkop Peninsula in Irian Jaya. However, the collection remained unstudied in the Zoological Museum of the University of Amsterdam in the Netherlands until officially described by Gerald R. Allen in 1982. The species was named Melanotaenia misoolensis in reference to the type locality.

Goyder River Rainbowfish

(Melanotaenia trifasciata)

The Goyder River Rainbowfish is the red colour form, and is, in my opinion, the most spectacular colour form of the species. As you can see from the above photograph, the adult males (and to a lesser extent the females) display red colouration on the body and blood red fins.

By way of contrast, the Coen River Rainbowfish has a green body and orange fins.
KEEPING AND BREEDING THE RAINBOW

AUSTRALIAN DESERT FISHES DESCRIPTIONS

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The Rainbow Fish

Rainbowfish belong to the family Melanotaeniidae and the closely related blue-eyed rainbowfish to the family Pseudomugilidae. These families are found in Australia, Papua New Guinea and Irian Jaya (Indonesia) .

In the wild, many species are endangered because of human activity and the resulting destruction of habitat. This problem is especially serious for the species from New Guinea. In captivity, rainbowfish readily interbreed, and many of the specimens available in petstores are hybrids or are of poor quality.

The Australian rainbow complex includes many colorful, interesting, and in some cases, rather spectacular fishes. Many species are easy to keep and breed and most make excellent community tank fish. The rainbow complex includes fish genera such as Glossolepis, Melanotaenia, Pseudomugil, Iratherina, Telmatherina, and Chilatherina which are characterized by both an anterior and a posterior dorsal fin.

The Glossolepis incisus or New guinea Rainbowfish is one of the most popular Rainbows. It is a brilliant ruby red with flecks of silver scales scattered across its side. These fish live in only one lake and its surrounding tributaries. The lake is in the Irian Jaya region and is called Lake Sentani. This lake is at an elevation of 75 foot above sea level. A tiny river connects this lake to the Ocean and accounts for why there are some marine species found in the lake. This lake is very abundantly overgrown with vegetation and periodic algae blooms, however the water maintains a high level of clarity. The new guinea rainbowfish has been established in the hobby for about 30 years now. It has been spawned quite frequently because of its high demand in the aquarium hobby. Breeders use spawning mops made of yarn and can mail eggs that adhere to these mops in tiny vials. This has allowed the new guinea rainbowfish to become the core species available to most hobbyists. These rainbows are easy to keep and will eat just about any food offered. They do not tolerate acid conditions and their optimum Ph range is 7.2-7.8. Hardness is not a factor that effects rainbows and it is recommended to add a little salt or shell grit to further mimic their native lakes water conditions. In keeping with the habitat of lake sentani, the tank should be heavily planted. New guineas are best kept in at least a 30 gallon aquarium and can live 3-5 years making them an excellent long term resident to any community tank or species tank.

Nothing could be easier than breeding rainbowfish, they are egg-layers and generally spawn amongst aquatic plants and grasses. They will routinely spawn in a community aquarium, however the adults will more than likely eat the eggs or hatching fry. If you want the fry to survive, then it would be better to set up a special breeding tank. Feed the breeders adequately with live foods if possible, to discourage them from eating the eggs. It is not unusual for this species to lay 100 eggs a day and the eggs will take about 7 days to hatch.

Glossolepis incisus was first collected by the Dutch Explorer, Max Weber who undertook extensive expeditions in the Dutch East-Indies (Indonesia) between 1890 and 1907. He created the genic name Glossolepis in 1908 for the species G.incisus - a magnificent, red coloured rainbowfish with shiny reflective scales. In spite of their early discovery G.incisus was not introduced into the aquarium hobby until 1973.

 

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Brackish Water Aquaria FAQ

Table of Contents

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The Mono

Monos are a schooling fish and while peaceful towards fish of their own size, they will eat smaller fishes that will fit into their small mouths. They are omnivorous and will eat all the regular fish foods. They enjoy eating lettuce and spinach, as well as live foods.

CLICK HERE

The Mono requires a progressively higher water salinity as it grows. Another name used mostly in Australia is the Finger Fish. This is because it has an almost fingerlike dorsal and anal fin. The scientific name Monodactylus means one finger. These fish have not been bred in aquaria. They should be kept in a shoal in a deep tank.

Name: Monodactylus argenteus

Origin: Africa to Asia

Size... 8 inches pH....7.2--7.8 GH....10 Temp.... 77°F

Food: Omnivore

This is a very flat, deep bodied fish. It has a brilliant silver body with dark, vertical bands on its front. The fins are edged in dark yellow and brown. It will do well in marine or fresh water, but prefers aquarium salts.

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Freshwater Moray Eel

Click HERE

Note: Mollies, swordtails, and some cichlids

do best at the lower end, and puffers, archerfish,

and bumblebee gobies prefer the higher salinity.

Brackish Water Species Profiles

Sorted by Common Name

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COMMONLY AVAILABLE FISHES

Monos (Monodactylus spp.)

Scats and Argusfishes (Scatophagus and Selenotoca spp.)

Archerfishes (Toxotes spp.)

Targetfish (Terapon jarbua)

Freshwater and brackish puffers (family Tetraodontidae)

Chromides (Etroplus spp.)

Kribensis (Pelviachromis spp.)

Mollies (Mollienesia and Poecilia)

Rainbowfishes (family Melanotaenidae)

Silversides (family Atherinidae)

The Rainbow fish is a fish that

can be a Brackish Water Fish.

Rainbowfishes are probably the brackish water fishes best suited to aquaria.

Rainbowfish are found in rivers, lakes, creeks, ponds, drainage ditches, springs, puddles, and swampy lagoons known as billabongs. Due to the varied habitats of rainbowfish they are very adaptable making them hardy aquarium fish. Rainbowfish can tolerate a large range of ph values and are virtually unaffected by hardness in the water. Rainbowfish are also related to a family of fish called Blue Eyes, these fish are often found in Marine habitats and mangrove shores.

Rainbowfish are very aggressive feeders and will eat mainly from the surface, so it would be a good idea to add a few corydoras catfish to scavenge uneaten food. Upon dissecting Rainbowfish, researchers have found that mosquitos are one of their main sources of food, thus acting as a mosquito control in its natural habitats. Not only are they useful in keeping mosquito populations in check, they are an important food source for larger creatures. Rainbowfish are a very important link in the food chain in these regions.

Some of their habitats are teaming with rainbowfish, others are being threatened by loss of habitat, pollution, and overfishing. one of the first Rainbowfish to be introduced to the aquarium hobby was the Melanotaenia Splendid or commonly known as the Australian Rainbowfish. There are many species that I plan to write about this month, so keep up with each species.

If you remember ROYGBIV(red, orange, yellow,green,blue,indigo,violet) the colors found in the spectrum of a rainbow, I will start with a red rainbowfish known as Glossolepis Incisus or commonly known as the New guinea Rainbow. Then I will move to an orange variety and so on. I will write about spawning rainbows and give some tips on creating conditions that will be optimum for keeping them. So remember if you must go chasing rainbows make it the Rainbowfish instead of the real ones, because I doubt you will ever find that pot of gold that is supposed to be at the end.

Rainbows are easy to keep, colorful, active, and come in a variety of sizes and shapes. They make beautiful species or mix species tanks, and add color and variety to community tanks, whether they are populated with peaceful or aggressive inhabitants. I recommend them highly to the experienced and novice aquarist alike.

The Rainbow Fish

m The thought of setting up a brackish water aquarium by many hobbyists may seem more trouble than what its worth. however, a brackish water aquarium suitably set-up with treated mangrove roots, rocks and sandy substrate can make a very attractive display.

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The Brackish water system combines the best features of both fresh and marine salt water systems. From fresh water it has the breedability of the fish, the lower cost, and probably the best of all, live plants. Many brackish water fish are as colourful as saltwater fish.

Aquatic plants for the brackish aquarium can be something of a challenge as most freshwater aquarium plants do not tolerate salt. However, this could be a fascinating and rewarding experience for anyone willing to try something different. If you are not that adventurous you could use naturally looking plastic plants instead. Following is a selection of commonly available fishes that can be successfully maintained in a brackish water aquaria.

AMONG THE MANGROVES

The thought of setting up a brackish water aquarium by many hobbyists may seem more trouble than what its worth. However, a brackish water aquarium suitably set-up with treated mangrove roots, rocks and sandy substrate can make a very attractive display. Water temperature should be maintained between 24 - 30°C, pH 7.8 - 8.4 and like any other aquariums, levels of ammonia, nitrite and nitrate should be kept to a minimum. Brackish water conditions can be obtained by mixing freshwater with saltwater at a ratio of 3:1. Although, you could accomplish the same effect by adding about 10 grams of aquarium marine salt per litre of freshwater. Maintenance on a brackish set-up is much the same as a freshwater aquarium. Partial water changes should be made every 14 days and when changing the water do not forget to add the salt supplement.

The Archer Fish

Click Here to the Archer Fish

There are six species of Archer Fish in the family Toxotidae, and they occur in estuaries and freshwaters over a wide range, from south-east Asia to the western Pacific. Depending upon species, they range in size from about six to sixteen inches (fifteen to forty centimetres) in length. Colouration and markings within individuals of a given species can vary substantially over its geographic range, and also depending upon many other environmental and physiological factors.

THE MUDSKIPPER

The following are the aquarium conditions that I keep my gobies in :

Water temperature - 24 to 28 deg C

pH - 7.5 to 8.0

Salinity - specific gravity 1.003 to 1.006 (approx. 25% marine)

The Puffer,

Freshwater to Brackish Puffers, Part of the Family Tetraodontidae

Puffers are of the family Tetraodontidae, meaning four toothed. Their bodies are club-shaped and unarmored. When in danger they have the ability to inflate with air and water making their bodies too large to be consumed. Their eyes are widely spaced on rather large heads and their bodies are often covered with spines or small plates. Their teeth are joined in a sharp triangular frame giving them a beak-like appearance. They are found in salt, brackish and freshwater and their flesh carries a toxin. They range in size from several inches to several feet.

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PUFFERNET

CLICK HERE

ODDBALL FISH

Four-eyed fish

False four-eyed fish

Mudskippers

In captivity they do well with a sandy bank on which they can feed. This is quite difficult to make in a small aquarium, but since Anableps are large fishes (30 cms in length) they eventually need an aquarium at least 100 cms (4 feet) long if a school of these fishes is to be kept. Depth is unimportant, 20 to 30 cms (8 to 12 inches) is adequate, so the best tank is broad, long but shallow. The tank must be covered well: these fish can jump surprisingly well.

The GobyBumble Bee Goby

ABOUT THE GOBY

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Just about all the sites I have visited cater for the mainstream fish. You are lucky if you can find some information on brackish species, but if you want gobies - forget it ! I think a lot of people don't even know that gobies exist - yet they belong to the largest family of fish!

The Violet Goby

or Dragon Eel

The Violet Goby is a large, peaceful fish; highly elongate. It resembles an eel with dorsal and ventral fins running the whole length of its body, and tiny eyes on the top of its head. It has an arrowhead-shaped tail fin. It is a light violet color and has some interesting features. It has a fused pelvic fin which enables it to attach itself to the aquarium glass, using the fin like a suction cup. It also has a large, trap-door type mouth, which is studded with easily visible teeth. Most aquarium dwellers average 14 to15 inches when fully grown, but have been known to reach 2 feet, and even longer in the wild.

Chequered Rainbowfish -- Melanotaenia

splendida inornata

M.s.inornata are tropical fish, and inhabit a variety of freshwater habitats with water temperatures ranging between 24°C during the dry season and up to 33°C in the wet season. The water is generally alkaline (pH 7.2 - 8.0); however, they are occasionally found in acidic conditions (pH 6.5 - 6.9). They inhabit the river systems of the Northern Territory and Queensland which flow into the Arafura Sea and Gulf of Carpentaria - from Darwin to the tip of Cape York Peninsular. They are frequently found in company with M.nigrans and M.trifasciata. They are peaceful, hardy, easily fed, spawn readily, and have brilliant colouration.

M. trifasciata or "Banded Rainbowfish" occur only in the far northern streams of the Northern Territory and Cape York Peninsular. It is probable that the distribution of this species is limited by water temperature as these areas of Australia are usually above 20°C with maximum temperatures approaching 30°C.

The Rainbow Fish

Bleher's Rainbowfish

Chilatherina bleheri is a lake and stream dwelling species found around the vegetated shores of Lake Holmes and feeder streams in the Mamberamo region of Irian Jaya. It was named after Heiko Bleher, a well-known fish collector from Aquarium Rio in Frankfurt Germany, who collected live specimens in 1982.

Brackish Water Fishes are some of the most complex biotopes

and can be found anywhere in the world where the ocean

and rivers meet; saltwater marshes, estuaries, mangrove swamps, etc.

UniqueFish

Swordtails and Platies on also fond of brackish water,

The Swordtail and the Platy are two more of

the peaceful live bearing aquarium fish

that are easy to take care of.

They both enjoy the brackish water Aquarium

    K Swordtail      

  CLICK Platy

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SETTING UP THE BRACKISH WATER AQUARIUM

(2a) Artificial sea water and measuring salinity

(2b) Temperature, hardness and pH topics (buffering, filter media, etc.)

(2c) Substrates and tank decor

(2d) Planting the brackish water aquarium

(2e) Diseases and remedies

(2f) Breeding brackish water fishes

The Brackish water

The quantity of salt added is very much dependent upon personal preference - what works best for the individual aquarist and on the species of fish he or she intends to accommodate. I have known people who are adamant that one teaspoon of salt per gallon is quite adequate while others have successfully used up to three tablespoons per gallon. Generally, anything that produces a specific gravity within the previously defined parameters should produce favourable results.


BRACKISH WATER FISH

There are many fish that do quite well in the brackish aquarium. Many of these fish should not be kept in small aquaria as they will get too large ; namely, the monos, both the golden (argenteus) and the silver (sebae), the archers, the scats, the gobies, the silver shark cats and the datnoides. The monos and the scats, in particular, are more interesting, in my opinion, when they are allowed to swim in schools. All of the above fish, as adults, should be given a fairly large aquarium for their best interests.

There are several brackish puffers. Some of these are cute when they are small but some of them can get to be about six inches long, also they do become quite aggressive with other fish. The puffers do have a very strong mouth, almost like a small bird beak. I have seen them crush a snail's shell and spit out the shell remains. One time a figure-eight puffer grabed a smaller, spotted puffer in it's mouth and shook it like a dog might shake a rat. It is recommended that the puffer be kept in an aquarium by itself, species wise.

Brackish fish do best in water with a salinity of 1.015, or one to two teaspoons of salt per gallon, and a pH of 7.5 or higher.

A List of  brackish water fish

Scats (Scatophagus spp.)

Monos (Monodactilus spp)

Anableps

Achirus species (chose the tropical brackish soles)

Pipefishes

Sailfin mollies and their relatives like mosquito

fishes (Gambusia species) and pike livebearer

Belonesox belizanus

Etroplus spp. (usually E. maculatus), Asian cichlids sold as

Orange and Green Chromides

Malayan halfbeaks (Demorgenys pusillus)

Indian glassfish (Chanda ranga), get the non-painted ones!!!

a number of brackish water killies

some African, like a lampeye Aplocheilichtys spilauchen,

some Middle Eastern, like Aphaniops dispar,

some native to USA eastern seaboard estuaries,

like mummichog, Fundulus heteroclitus,

and American flagfish Jordanella floridae from

the brackish end of Florida swamps;

hermaphroditic Rivulus ocelatus from South America,

Wester US desert pupfishes like Cyprinodon salinus,

a huge number of the nominally freshwater killies will

do splendidly in water that is quite brackish -- and many

of the African and South American species look as colourful

as marine fishes),

Asian Dantinoids (who get too big for small tanks),

Asian and Australian Archers,

some Australian rainbows like Melanotaenia macculochi,

their compatriots Australian gudgeons (gobies) like Mogurnda mogurnda,

a number of other gobies, like sleeper gobies,

Additionally, the following plants are said to be good for brackish tanks:

Java moss, Java fern, Elodea densa (Anacharis), Hygrophila polysperma

As long as the water is not VERY salty: Echinodorus tenellius (pygmy

chain swords), Sagittaria subulata, S. graminea, S. gigantea,

Vallisneria americana, Water sprite, Hornwort.

DATNOIDE

Siamese Tigerfish

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There are two main species of Siamese Tigerfish..

Datnoides microlepis and Datnoides quadrifasciatus.

D. microlepis is the more hardy of the two main types of Tigerfish . The background coloration of this fish varies from a clear creamy white to pale tan, with verticle jet black bars on its body. The number of black bars actually depends on its geographic location. Fish from the Asiatic mainland have six bars, and those from the indo-Australian archipelago have seven. These bars do not converge with age.

The Scat

The genus Scatophagus includes the most widely available fish, and are found all over the Indo-Pacific. Selenotoca is more localized, restricted to New Guinea and Australia.

Scatophagus argus is available in a range of colour varieties which may or may not be true subspecies. The commonest variety reaches over 30 cms in length. As a juvenile it is quite rounded in shape with variable colours but basically a spotted brown to green. One variety, the ruby scat (Scatophagus argus atromaculatus or "Scatophagus rubifrons "), has flecks of red over the body, especially along the back. Both become bronze to silvery brown when mature, with dark spots and a distinctive, hump-backed appearance. The African scat Scatophagus tetracanthus has stripes running vertically on the body when small, but is otherwise similar as an adult

Java Fern

If you' ve had trouble growing aquatic plants,

you can probably grow Java Fern. Add to

this a beautiful medium to dark green color

with forms ranging from bushy to leafy spikes

and you have what experts call a "beautiful"

and "decorative" aquarium plant .We can

describe the care and maintenance

of this great aquarium plant.

CLICK HERE

Java Moss also enjoys the brackish water

Our interest extends beyond these pages, to promoting conservation and aquaculture research projects worldwide-from helping understand environmental changes, to saving the endangered reefs, and endangered species with captive bred freshwater and marine life.

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