Flowerhorn. Mouth hangs open

[ZEROPILOT]

I've had about two dozen large Flowerhorns as pets. Some I purchased as adults. Some I've raised. I now own five and of these, two have mouths that never fully close. I have a young adult White Pearl big hump F/H and a Very large adult Red ZZ F/H that never seem to close their mouths. They swim, eat and sleep with their mouths partialy open. (They DO clamp shut when biting food, etc.) This isn't caused by an injury. Is it a trait of the sub species? The fish I own are not related genetically.

 

[DDK]

Very well could be a genetically inclined, fh's are just muts so inbreeding is common and may not show up for a couple generations so... yea. Probably a birth defect but it should be fine.

 

[ZEROPILOT]

Mouth not closed

 

[tungtruong4]

I think there is not enough oxygen in the tank.

 

[bulldovii]

Yeah just a birth defect/morph kind of like most parrots...Nuttin to worry about. They look great btw.