bichir teeth

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ya know i never thought about it before...then i saw this thread and i was like...mmmmm....now that i see this it has turn a cool fish into a f'n bad *** fish...and i am glad i am getting more...that also made me think if my ropefish has teeth...i would think that it would...i just looked at it and a pic of a python with its mouth open poped in my head...lol
 
hello,

i will tell some interesting about the jaws of polypterids that hadn't found it's way up to here.
there are existing several analysis about the power of the jaws of different animals. best known are the results of all those "classic" and well-known predators like sharks and crocodiles - the big ones. but to judge the real jaw power one have to look at the relationship of the size of the comparable animals!
the fact: polypterids do have a jaw power similar to sharks! so they are one of the most powerful biters in the animal's world! big surprise :-)
bichirs tend not to bite the keeper - so no one will notice anything.
myself had to watch one day my ornate killing a jack dempsey cichlid of much more than half the size of the bichir. he worked like a tiger shark with the same rapid and deadly results. a real killer ...

greetings
uwe
 
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uwe;3593082; said:
hello,

i will tell some interesting about the jaws of polypterids that hadn't found it's way up to here.
there are existing several analysis about the power of the jaws of different animals. best known are the results of all those "classic" and well-known predators like sharks and crocodiles - the big ones. but to judge the real jaw power one have to look at the relationship of the size of the comparable animals!
the fact: polypterids do have a jaw power similar to sharks! so they are one of the most powerful biters in the animal's world! big surprise :-)
bichirs tend not to bite the keeper - so no one will notice anything.
myself had to watch one day my ornate killing a jack dempsey cichlid of much more than half the size of the bichir. he worked like a tiger shark with the same rapid and deadly results. a real killer ...

greetings
uwe
That is crazy. This thread is sad seeing more experienced fishkeepers with dead endli's etc :( I had a heater fail yesterday and it cooked my tank to 90 degrees luckily my bichirs each individual of each group (Listed in my sig) made it through. Thank god.

Interesting thread. Ive seen many catfish with the rubbery teeth to hold prey but it appears endli's (Mine included after some close observation) have some teeth :headbang2 Pretty cool.

I hand feed often though and after being bit by an Australian lung fish which had me in the ER from a "Subderal Hematoma" (SP?) it swelled up bad after three days. Doc said I could have lost my finger if I had waited any longer. They had to do an emergency operation and burn holes through my fingernail and drain all the inflammation of blood and pus.... Not fun considering I had to work that day with my hands and a bulky bandage.
I have a thread about it in the general aquaria area some months ago...

Anyways sorry I digress I had a few glasses at dinner :D
 
Hello,

lung fish are also gigantic biters - but they tend to use their jaws in every situation. So it seems that lung fish are the more powerful biters than bichirs. But it is the attitude ...

Greetings
Uwe
 
tcarswell;3593123; said:
I hand feed often though and after being bit by an Australian lung fish which had me in the ER from a "Subderal Hematoma" (SP?) it swelled up bad after three days.

Err...

Just a hint: you probably shouldn't hand feed anything that can actually inflict damage to you.
 
I think you tend to get a feeling for the personality of the fish that you keep. I used to hand feed my ornate, but if I put the jaws of a bichir on my ctenopoma I wouldn't put my hand near the tank without securing him first.

People hand feed wild sharks, can that go wrong... sure, but people do it anyways
 
King-eL;3533380; said:
Dude a splenial is not a set of teeth look a like that what you see.

Here is a pic of a splenial bone (Not from a bichir though). Spenlial bone are found in the inner side of the lower mandible.
http://www.palaeos.com/Vertebrates/Bones/Dermal/Images/Dentary1.gif

There was a same topic of this before in AP and I'm trying to look for it. I'm trying to dig out some info that I've read before that they have more than a single row of teeth.


Sorry it took so long to get back to you on this, too much going on in life, but actually the splenial bone in polypterus DOES have those small tooth like structures.

I haven't had time to find a purpose for them, especially since we established that they lie well beneath the flesh in the jaw, but that is definitely the splenial bone on the inside of the jaw.

The reason the image you found doesn't have those structures is because just as you said, it is NOT a polypterus. Not all splenial bones will be identical between different animals, creatues are more specialized than that.



If you read further into that study I already posted, and there is a lot of info in there, the only problem is that it is full of technical jargin that you need schooling for. I was able to manage by using dictionary.com lol

Here's the paper: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1262970/


Scroll down to figure 35 and 36.

Figure 35 shows the splenial bone (with the structures you keep refering to as teeth, but they're not). You'll notice that those structures vary in size and extend almost completely along the splenial bone, sure they are not used for chewing or to hole prety on the linguistic side of the jaw, plus those are too small.

Rather I believe they are an attachment point for the flesh itself.

Figure 36 shows the jaw (maxillary) without the splenial. Notice how those tooth-like structures are missing.


I hate beating a dead horse, just don't like being told I'm wrong when I'm not. lol
 
Cohazard;3616819; said:
Sorry it took so long to get back to you on this, too much going on in life, but actually the splenial bone in polypterus DOES have those small tooth like structures.

I haven't had time to find a purpose for them, especially since we established that they lie well beneath the flesh in the jaw, but that is definitely the splenial bone on the inside of the jaw.

The reason the image you found doesn't have those structures is because just as you said, it is NOT a polypterus. Not all splenial bones will be identical between different animals, creatues are more specialized than that.



If you read further into that study I already posted, and there is a lot of info in there, the only problem is that it is full of technical jargin that you need schooling for. I was able to manage by using dictionary.com lol

Here's the paper: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1262970/


Scroll down to figure 35 and 36.

Figure 35 shows the splenial bone (with the structures you keep refering to as teeth, but they're not). You'll notice that those structures vary in size and extend almost completely along the splenial bone, sure they are not used for chewing or to hole prety on the linguistic side of the jaw, plus those are too small.

Rather I believe they are an attachment point for the flesh itself.

Figure 36 shows the jaw (maxillary) without the splenial. Notice how those tooth-like structures are missing.


I hate beating a dead horse, just don't like being told I'm wrong when I'm not. lol

Well thanks for clearing the splenial bone. I just recently knew about it too when you posted the link of the paper before was just to lazy to read the whole thing and miss the Figs. when you scroll down.

But the OP ask if bichirs have multiple set of teeth, then I would still say YES. Just like the maxilla and the mandible they have teeth attached to them, then that same goes with splenial it got some teeth attach to it. Reason why I'm saying this because the those tiny teeth on the splenial are ditachable. Just like when I took out the teeth from the maxilla and mandible, they have that same hole mark that was left behind.
 
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