That's kind of what I was thinking, plus none of my other fish show any kind of illness!I don't think i a fish could really choke because don't they just need water moveing over their gills to breath. If i am wrong somebody correct me. But what ever happened thats weard man!
but bichirs also need to get air into their 'lungs', it's getting some O2 from the gills, and it may be able to go up to the surface to breathe air, but that air isn't getting through because of the gravel. don't know the exact mechanism, but thats my partial 'theory'I don't think i a fish could really choke because don't they just need water moveing over their gills to breath. If i am wrong somebody correct me. But what ever happened thats weard man!