venting

[fishguts]

if a fish has a round hole in front and then a oval hold behind it what is it? male or female

 

[calamari]

depends on the fish. Venting isnt always 100% accurate either. sometimes it doesnt even matter what the vent sizes are. But i know in oscars and such that if the vents look like this (oO) then its a female and if they like this (00) then its a male.