the guys have the male parts and the females have the female parts did you go to grade 4 health?
Well, they don't
they females are brighter and the males are paler
The males have a red tail.
if female beta fish are put together they would start to fight like the males.
Female fish will have a v shape in there tail fin more than the males.
It depends on the species. There are at least three different species commonly called 'Gourami'. In the case of Colisia sp. and Helostoma sp. the male is much more colourfull than the female. In Trichogaster sp. the main difference is in the fins. The males have much longer flowing fins than the female.
In some species this does happen.
NBo not unless you have two males and one pregnant female
in male fighter fish there is very deep colour and in female there is very fead colour female have a egg sack but males dont have
Usually female angler-fish are at least 40% bigger than males.
Yes, some fish even have standards. In Bettas, Males are deemed attractive by how well built their bubble nest is. Yet in live bearer society, males chase females either until the female wants to mate, or until the female gets tired, than mate with them.
Female danios are much chubbier and slightly larger than the males when fully grown.