Look at the couloirs the length of their fins, and the brightness
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.
The way in which you can differentiate between a male and female Milkfish is that the female has three openings on the anus while a male milkfish only has two.
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.
Different species have many different ways of being identified as male or female. In some there is no external difference at all.
Male betta fish are larger, more colorful, and have much longer fins. They also differ in their behavior, and they obviously have different sexual organ systems.
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
look between their legs
I am not sure, i think it is fish and chips!
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.
Feeder fish, How do you tell male from female of the?
The male is more yellowish then the female so I have been told! The female is a lighter yellow!