I would stick to breeding the same species of fish. When two different types are bred, sometimes the young are unable to survive, since the parents are so different.
To tell the gender, usually a male fish will have a longer annal fin then the female. But this does not always work. I would ask your vet or an assistant at the fish store at which you bout your fish. They are specially trained to tell the differences.
Different species use different methods.
There are so many species of fish and they all differ. There are some in which there appear to be no differences and others that are so different they look like different species. If you define the species then I may be able to tell you how to sex them.
Different species require different methods to determine if the fish is male or female. Usually, the female is larger and rounder than the male. Some species have different shapes of fins. Some species have different colors. Without knowing what species you are trying to identify, it is difficult to give a definite answer.
Different species have many different ways of being identified as male or female. In some there is no external difference at all.
The male of the species has brighter colours and is a much larger fish than the female
There is no one specific way to tell the difference between male and female fish. Different species have different ques, and in the vast majority of fish, there is really no reliable external way to tell a fish's sex.
That depends on the Species of the fish. The only thing that does not differ is that the female always produces the eggs (ova) and the male always produces the spermatozoa (milt).
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.
The male of the species is considerably larger, has much larger fins and is much brighter in colour than the female.
Feeder fish, How do you tell male from female of the?
different parts of the flower are not different genders, and it depends on the flower. Not every plant have different genders, some species are asexual (both male and female).
There are several bird species called Robin, and the differences between male and female can be different in different species. In the American robin the male has a red chest and the female has a brown chest