Basic Information?

  • We are currently upgrading MFK. thanks! -neo
klipsch: Isn't having three or four 12-14 inch fish a little bit much for a 55 gallon aquarium? Or do they not need much space and not produce much waste?

amesbien: Thanks! I know, I will probably end up putting a couple of rocks on the aquarium lid, just to be sure.

What other fish are polypterus compatible with? Are polypterus aggressive fish? Would a couple of dwarf gouramis go well with a couple of polypterus?

What would be a good substrate? I read on here that I should only use sand or nothing at all, is this true, or would gravel work also?
 
Sand if ingested can pass thru the digestive tract,Gravel if ingested can cause intestial blockage (several incidents have been reported).Sand or fine crushed gravel is the preffered substrate.Barebottom tanks work well as its easy to find watse products.One tip on barebottom tank paint the outside bottom of the glass.-Anne
 
Compatibility, the reality
When asked "will they get along ?" Sometimes the answer is as simple as yes or no, The truth is we speak in generalities some fish in theory should be ok together some not.The long broad sweeping statements are flawed as they are generalities I think we all know generalities are just opinions , but because we are dealing with animals each with its own personality its flawed.This question is harder with predatory fish, due to their natural habits ,predation! where they naturaly feed on the smaller , the weaker and the sick, claim territory and defend it . The actual answer is we don't know it's our best guess that they should or shouldn't get along.I know one of my bichirs is highly agressive which is completely different from what i have been told, so he's in his own tank , my others all conspecifics seem fine together which is oppisite from what i have read and been told. Its a case of trial and error to some extent and depends on the individual animal. When introducing a new animal into the territory of an established animal try rearanging the tank it tends to remove reference points for territoriality but most important watch for trouble and stop it before it goes to far.
Tankmates
Below is a partial list of possible tankmates for the small to midsized bichirs species.Parameters I used are based on size, temperment and availabilty . And i believe is a good starting point for you to do further research before purchasing -Anne
CATFISH
Dusky Pimelodid-Pimelodus blochii
Giraffe Catfish-Auchenoglanis occidentalis
Dwarf giraffe Catfish-Parauchenoglanis macrostoma
Giant Whiptail Catfish-Sturisoma aureum
Synodontis alberti
Synodontis angelicus
Synodontis pleurops
Synodontis decorus
Synodontis eupterus
Synodontis notatus
Synodontis brichardi
Synodontis nigrita
Synodontis flavitaeniata
Synodontis soloni
Liver Catfish-Heteropneustes fossilis
Black Lancer-Bagrichthys hypselopterus
PLECOS
Bristlenose-Ancistrus dolichopterus
CHARACINS
Silver dollar-Metynnis argenteus
Distichodus notospilus-Distichodus notospilus
Congo tetra-Phenacogrammus interruptus
Black-Barred Myleus-Myleus schomburgki
Filament tetra-Bryconaethiop microstoma
EELS
Peacock Eel- Macrognathus aculeatus
CICHLIDS *(see note)
Dicus-Symphysodon discus
Angelfish-Pterophyllum ssp.
Two-Spot Cichlid-Cichlasoma bimaculatum
Tilapia joka-Tilapia joka
Oscar-Astronotus ocellatus
Severum-Cichlasoma severum
Kribensis- Pelvicachromis pulcher
Sparkling Earth Eater-Satanoperca acuticeps
Blue acara-Aequidens pulchrus
Balzani's Earth Eater-Gymnogeophagus balzanii
Blood Parrot Cichlid-Hybrid no scientifc name
Blue-Eye Cichlid-Cichlasoma spilurum
Festivum-Mesonauta festivus
African Peacock Cichlid-Aulonocara nyassae
Balzani's Earth Eater-Gymnogeophagus balzanii
Bandit Cichlid-Aequidens geayi
Blockhead Cichlid-Steatocranus casuarius
Callolepis Cichlid-Cichlasoma callolepis
Freiberg's Peacock Cichlid-Aulonocara jacobfreibergi
Keyhole Cichlid-Cleithracara maronii
Port Acara-Aequidens portalegrensis
Uaru- Uaru amphicanthiodes
LABYRINTH FISHES
Ctenopoma .acutirostre-Ctenopoma .acutirostre
Ctenopoma oxyrhynchus-Ctenopoma oxyrhynchus
Ctenopoma kingsleyae-Ctenopoma kingsleyae
CYPRINIDS
Variegated Shark-Labeo variegatus
Bala Shark-Balantiocheilos melanopterus
Red-Finned Cigar Shark-Leptobarbus hoevenii
Red-linned torpedo barb-Puntius denisonii
Tinfoil Barb-Barbodes schwanefeldii
Chinese Algae Eater-Gyrinocheilus aymonieri
Clown Loach-Botia macracantha
MISC.
African mudfish-Phractolaemus ansorgei
Black Ghost Knifefish -Apteronotus albifrons
Elephantnose-Gnathonemus petersii
African butterfly-Pantondon bucholzi
African Knifefish-Xenomystus nigri
(*note :to avoid agression do not have breeding pairs )
 
How frequent would I need to do water changes? 10-20% weekly will be fine

is a high dollar filtration system required? I'd recommend a good canister filter
the water level needs to be aproxx.3 inches below its normal level as Polypterids
need acess to atmospheric O2 and normal HOB filters while they will work tend to
make a bunch of noise due to the water falling back into the tank.Another benefit
of a canister filter is the holes only need to be big enough for the small hoses
to pass thru.
Use a good quality fully submersible heater then onyl a small notch is needed
in the top for the wire to enter the tank-Anne
 
Water chemistry
In their natural occuring range West and Central African rivers,lakes and swamps
bichirs are found in water conditions varying in pH values between 6.5 to almost 9.0.
And water hardness varying between2dH to almost 20dH.
And tempuratures ranging from mid 70'sF to mid 80'sF
with a dissolved oxygen content between 3.3 parts per 1000 by volume
and 2.50 parts per 1000 by volume.
3.3 parts per 1000 by volume is common in aqauria kept at 75 F
These water parameters will flucuate thruought the year as dry season gives
way to the rainy season and rivers rise and swamps flood often lowering water temps
for short peroids of time.As you can see they are tolerant of a wide range of water
conditions.
Brackish bichirs?
Bichirs are freshwater fish and, though some are found in rivers near where they empty into the ocean, the water they inhabit is fully fresh.
Polypterus ornatipinnis and Polypterus e.congicus are sometimes found in Lake Tanganyika which has hard, alkaline water but are rarely, if ever, found in the lake itself. Instead, they inhabit the swampy areas where river water empties into the lake proper.-Anne
 
FEEDING & NUTRITION
Now that you have a bichir what does it eat? In their natural habitat bichirs normally eat small fish,various insect larvae and invertabrates.Bichirs are generaly non agressive ambush predators but also oppurtunistic scavengers.Objects to big to be consumed whole are often "deathrolled" till
small parts are twisted and ripped off the carcass.The key here is to balance the diet thru a variety
of foods with an eye on total nutrition.A varied diet is a good diet for your fish and yourself.
Now then what can we feed them? You actually have several options and They will be listed below
The freezer at your local fish store is a smorgasboard of foods which should include
silversides or lancefish
mysis shrimp
brine shrimp
krill
bloodworms
tubifex worms
squid
beefheart
Simply thaw and feed


Your local market can be a great source of foods check the seafood section of the freezer
You can use just about any foods you find there including
mussels
shrimp
most fish filets (avoid salmon i think its to oily)

Available at the butcher counter or they should be able to order it for you
beefheart
and yes chicken gizzards
to prepare the above cut it into strips and remove any fat you can find
fish do not digest mammialian fat well

Live foods include
some frog species(some frogs release a nasty chemical when bitten)
tadpoles
African dwarf frogs are safe and part of the natural diet
ghost shrimp
earthworms
mealworms feed only the recently shed(white) ones the chiton in the exoskeleton
can be hard to digest and in some can result in intestinal blockages.
There is really no reason to feeders except as the ocassional treat.
Various live fish and fry can be used for foods.Caution here unless you raise them
any commercialy bought feeders usually rosie reds/tuffies (the albino form of fat head minnows),
guppies,bait minnows etc.need to be quarantined before feeding them to your fish for several reasons.
reason 1 They are kept in horrible conditions
reason 2 They are often diseased
reason 3 They often are carriers of parasites
During quarantine dispose of the obviously sick or diseased.The remaining ones feed quality
foods a healthy feeder is of course better for your fish.
Goldfish just generaly are poor feeders and should be avoided. they are oily not very nutritious and constant feed of them causes faty deposits on the liver leading to premature deaths.They also contain very high levels of Thiaminase a destroying hormone.While many fish used as feeders contain this goldfish seem to have an abundance of it.Another issue is a spine at the front of the dorsal fin which can lead to problems if the goldfish is swollowed the wrong way (tailfirst).Yet another reason not to use goldfish,goldfish farms utilize copper meds in suspension form to combat diseases in the feeders associated with overcrowding.These copper meds are retained by the feeders for long periods after they leave the farms.Most lfs invariably retain all or part of the feeders shipping water when the feeders are loaded into their bins/tanks. And copper does not dissapate from a closed system.
The key is to balance the diet with a variety of foods listed above not just 1 or 2 items and skipping a meal once you notice a decline in growth rate is good for fish.The sad truth is we as hobbyists tend to overfeed our charges

Pellitized foods
Can be found in various diameters and forms include sinking and floating pellets and sticks
shrimp pellets
worm pellets
even pellets for cichlids will work
spirulina sticks
brine shrimp sticks
Algae wafers(some eat them some just look at them)

When feeding pellets how much to feed?
Under 7''I let them eat as much as they want several small feedings when young are better then 1 or 2 large feedings.I let juvies eat till theres a slight bulge to there bellies
This really applies to bichirs 7''+ I feed mine twice a day skipping at least one day a week
Approx. 80% of their diet is a quality pellet food the rest frozen with the ocassional live feeders after quarantine of course.
How manyPellets?
I start off with total 2 pellets per inch of fish eg. a 7'' fish gets 7 pellets in the A.M. and 7 in the evening feeding is then adjusted up or down so all pellets are consumed.Remember a nice round bichir is a happy bichir

Read the labels and look for this information
NUTRITION FOR CARNIVORES
Below are the agreed upon nutritional requirements for predatory fish
below that is a list of necessary vitamins usually supplied and just for informational
purposes.
PROTEIN:: 45% or more (this would be the ideal)
FAT:: 3% Min. to 6% Max.
FIBER 2% Min. to 4% Max

VITAMINS and what they do
(If you want to suppliment vitamins use only vitamin products developed for fish
do not use vitamnins developed for humans use.)
-------------------------------------------------------------
Fat Soluble Vitamins
VITAMIN A promotes cellular growth
Functions: - normal vision, cell growth and resistance to infection
Deficiencies: - poor growth, poor vision, abnormal bone formation and
hemorrhaging at the base of the fins
VITAMIN D3 important for developing bone
Functions: - calcium blood levels (?)
Deficiencies: - unknown
VITAMIN E important for the development of the sex organs in breeding fish
Functions: - antioxidant, may paly a role in muscle cell respiration
Deficiencies: - anemia and poor growth
-------------------------------------------------------------
Water Soluble Vitamins
VITAMIN (B1)
Functions: - Thiamine-aids growth, digestion and fertility, nervous system
Deficiencies: - poor appetite, muscle atrophy, convulsions, loss of
equilibrium and poor growth
VITAMIN B2 Riboflavin- regulates enzymes
Functions: - vision, protein metabolism and enzyme functioning
Deficiencies: - photophobia, cloudy lens, dim vision, abnormal
colouration of the iris, striated constrictions on the
abdominal wall, dark pigmentation, poor appetite,
anemia and poor growth
VITAMIN B3 Nicotinic Acid-needed for proper digestion
Functions: - plays an important role in lipid, protein and amino
acid metabolism
Deficiencies: - loss of appetite, poor growth, lesions in colon,
erratic motion and weakness, edema of stomach and
colon
VITAMIN B5 Pantothenic Acid-controls metbolism and hormones
Functions: - adrenal functioning, cholersterol production, normal
physiology and metabolism
Deficiencies: - poor growth, sluggishness, clubbed gills, loss of
appetite, hemmorhagic skin and cellular atrophy
VITAMIN B6 Pyroxidine-enzymes and metabolism of protein
Functions: - plays a vital role in enzyme systems and protein
metabolism
Deficiencies: - nervous dissorders, fits, loss of appetite, poor
growth, rapid and gasping breathing, flexing of
opercles and hyperirritability
VITAMIN B12 Cyanocobalamin- metabolism
Functions: - enzyme systems, cholesterol metabolism
Deficiencies: - poor appetite, poor growth, anemia and dark
pigmentation
VITAMIN C Ascorbic Acid- formation fo teeth and bones , healing wounds and formation of
cartillage
Functions: - enzyme systems, bone, tooth and cartilage formation
and healing
Deficiencies: - hemorrhagic shin, kidneys, liver, intestine and muscle
tissue, eye lesions and scoliosis of the spine
VITAMIN H Biotin- promotes cell growth
Functions: - enzyme systems, purine and lipid synthesis, oxidation
of lipids and carbohydrates
Deficiencies: - loss of appetite, poor growth, anemia, skin lesions
and muscle atrophy
VITAMIN M Folic Acid- formation of blood and metabolism
Functions: - blood cell formation, blood glucose regulation and
fish metabolism
Deficiencies: - poor growth, lethargy, dark skin, anemia and fragility
of the caudal fin
CHOLIN growth and breakdown nutrients (fat) regulating glucose
Functions: - good growth and food conversion
Deficiencies: - poor growth, poor food conversion, hemorrhagic kidney
and intestine
INOSITOL permeability of cell membrane
Deficiencies: - poor growth, distended stomach, skin lesions and
increased gastric emptying time
p-AMINOBENZOID ACID- stimulates growth (not proven essential)
Deficiencies: - no abnormal indication in growth, appetite and
mortality

free in water the following happens After 30 seconds this applies to
water soluble vitamins only
Vitamin b6 loss 15%
Folic Acid loss 20%
Choline loss 30%
Panothenic acid loss 50%
Vitamin C loss 70%
Vitamin B12 loss 90%-Anne
 
What else would ya like to know -Anne
 
Mtnbike, hope yah dont mind me butting in but ive got a question along the same line...............

would bumping the tank up to a 75/90 gal increase the number of species i could keep? my main problem is locating tanks............a round trip to a true fish store is around 400 miles.............sometimes living in the middle of nowhere sux
 
rattler_mt;781074; said:
Mtnbike, hope yah dont mind me butting in but ive got a question along the same line...............

would bumping the tank up to a 75/90 gal increase the number of species i could keep? my main problem is locating tanks............a round trip to a true fish store is around 400 miles.............sometimes living in the middle of nowhere sux

definitely yes! there is a big difference in size between a 50g and 75g/90g.
my bichir tank before was 80g(customized for bichirs 48"x22"18") before it leaked and caused a major crack, now im using a growout 50g. the difference with my old tank is huge!

i would suggest get the biggest you can get!
 
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