Blind, silly or canabalistic axies?

I notice that when feeding my axies they wont really seem to notice the food in front of their faces and it seems like they accidentally mistake each other for food (they've never taken anothers limb though only tips of tails or tips of the gills), they've never been starved and their diet is very varied, it seems like they hunt for their food by smell, they cant be cannibalistic as they only do it when looking for the food in the tank.

I'd say they were blind BUT
I put some mosquito larvae in their tank and both of the axies have stared up at it before swimming for it

and they couldn't be territorial as their tank is very big and it can be hard to find them in it, what I've been doing is pushing them apart if they get to close with a sanitized straw that I use for spreading their food

they cant be hostile as they happily rest next to each other all the time

whats up with them????!!!? =[

You've sort of already answered your own question......they hunt by smell.
With regards to the mosquito larvae they may have been more aware of your movements above the waters surface and when they looked up at you, saw and smelt the larvae.
Biting chunks out of each other is normal, if something brushes against their lips or nose they will grab at it. I would imagine its a natural instinct.

They're not blind but their eyesight isn't the best after all they prefer darker more shaded areas so good eyesight isn't a must in bad light, however good sense of smell is.

Its pretty pointless pushing them apart with a straw when you see them get close to each other or else you would need to sit up all night long watching them, they are most active at night.
Therefore there is nothing wrong with your axies, they are exhibiting normal (tank) behaviour.

They don't mean to bite each other, I think its more a case of 'I smell food, what was that that just moved?, quick grab it, oh sorry mate its your foot lol

ah good as long as they're ok. thank you
I got all worked up and stressed and panicked

don't feel silly about panicking, i saw mine bite the other one for the first time about an hour ago and i panicked too.

You will soon get used to them biting each other. Its normal to them, they think anything that moves is food. However I still jump when I see mine have a quick nip at each other. I'm always afraid to look in case there are body bits hanging off, but they are always ok.

I panicked because one bit the others face to the point were ones lower jaw was in the others mouth
but he did spit him out though. usually they spend most the day near each other.