Arapaimas- what's with the Holes in their head

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were not so sure about that hole too....but must be just how they are characterized as a ancient creature from ages ago....like a living breathing fossil.Must connect to its inner brain or head cannals where its actual brain makes these stuff inside of it move like ours
 
Are arapaimas arowanas?
 
No. Arapaima are their own genius and species. They are closely related to arowana- both are boney tongue fish.

The "holes" in there head serve two purposes. First and foremost they are sensory points for detecting movement in the water. Second, males secrete a 'milk' from glands that are used to sustain the fry when they are still in the nest area.
 
artemis1;1267101; said:
Why do all the arapaims has weird patterns and rivets all over their head? Just curious if anyone knew.

Thanks,
Art
Click to expand...

that's the mark of ancient monster..haha:D

Zoodiver;1267159; said:
No. Arapaima are their own genius and species. They are closely related to arowana- both are boney tongue fish.

The "holes" in there head serve two purposes. First and foremost they are sensory points for detecting movement in the water. Second, males secrete a 'milk' from glands that are used to sustain the fry when they are still in the nest area.
Click to expand...

paiche are great parents..
 
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