Senegal Bichir... Dinasour Bichir?
Posted 05 April 2008 - 06:59 PM
Posted 05 April 2008 - 07:13 PM
Polypterus senegalus senegalus.... is it the bichir sold in lfs as "Dinousour Bichir". i dont want to get the wrong type, some bichirs get way too big.
Yeah it is one of the common names for the polypterus senegalus,
Posted 05 April 2008 - 07:31 PM
Posted 05 April 2008 - 08:02 PM
Posted 05 April 2008 - 08:17 PM
Posted 05 April 2008 - 08:23 PM
Posted 05 April 2008 - 09:12 PM
Young bichirs in this example P.senegalus, As they
breed in captivity and are now being farm raised
and are the most readily available subjuvenile of
the bichirs and the cheapest ( $5-10) range
and they are incerdibly small when we buy them
2''-3'' is about normal .
This is how I raise them certainly there are other
ways. I use the step up system in other words
small fish small tank as it grows I move it up
to bigger tank. Its a three step process I use
they start off in a 10 gallon tank with the water
level reduced to about half the tanks volume
fine gravel or sand for the substrate and silk
plants for cover and to float in.I use a sponge filter At this stage
they are fed bloodworms and baby brine shrimp
chopped squid and very small silversides
I feed small portions a few times a day.This
isn't possible for many but try feeding morning
and again at night, between now and 7" they
are undergoing their greatest growth and are
When they reach approx. 5'' i add a small
power filter and raise the water level to approx
2 inches under the trim frame.At this size they are
bigger foods small feeder, ghostshrimp,bloodworms
earthworms etc .They stay in this tank till 7-8'' at which point
I move them to a 20 gallon long for final growout
These steps allow the bichir room to exercise
but still small enough so its easy to find/catch
food. Of course if I get a bigger specime
5-6'' they would go into the 10 gallon then move
up to the 20 long this gives me time to watch
for any signs of illness.-Anne
Posted 05 April 2008 - 11:53 PM
Posted 07 April 2008 - 01:26 PM
Posted 07 April 2008 - 09:09 PM
Posted 07 April 2008 - 09:54 PM
What's the typical adult size for senegals?
Posted 08 April 2008 - 05:01 AM
Posted 08 April 2008 - 09:39 AM
What's the typical adult size for senegals?
That would be a large specimen in captivity, the stopping point for most sennys is about 7".
Feeding question. when i get the senegals they are going to go into my 10 gallon. right now it houses a banjo catfish and a cory cat (among others) which would probabl have a conflict with eating, since they all eat the same thing. should i go ahead and get the 20 gallon first and move the banjo and cory in there and then let the senegals have the 10 gallon? that way nobody is competing for food, except maybe the two cats. oh and i plan on raising my senegals on feeder guppies and a few other foods every once in a while to supplement their diet. does that sound good?
Whilst the senny is small the cories should be fine getting enough food, however sennys do gobble down alot of food very fast and I would be worried that the banjo would not get anything, as they are very shy and would not come out in daylight to feed, only when they are ready which will be after the senny has eaten it all probably.
As I said cories should be fine if the senny is small however once the senny reaches the 5" mark then they will have to be seperated as the senny will be quite boisterous when feeding and cories may get eaten as well if you leave the senny to get much bigger with them.
IMO feeding senegals feeder fish is totally unnecessary, a diet of prawns, mussels (chopped if necessary), bloodworm and carnivore pellets will be just as good if not better than feeder fish.
Posted 08 April 2008 - 04:44 PM
The avg size for a normal P.senegalus is 10-12 inchesTL in captivity
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
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
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
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)
African dwarf frogs are safe and part of the natural diet
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
Can be found in various diameters and forms include sinking and floating pellets and sticks
even pellets for cichlids will work
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.
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-Anne
Posted 09 April 2008 - 05:03 AM
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Posted 11 April 2008 - 11:09 PM
Posted 12 April 2008 - 03:48 AM
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