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There is no sexual dimorphism in Oscars (Astronotus ocellatus) although some amateurs may claim different. (Comparing fins has been touted but that's like comparing hair length in humans) The only two ways to tell are by actually netting and upending the fish to examine its' sexual organs (job for an expert) or watch them spawning and check out the shape of their 'tubes'. The female has a wide tube and is the one that lays the eggs. The male follows after the female and has a pointed tube it does not lay eggs.
What else can I help you with?
How do you tell between female or male goldfish?
Female goldfish are usually bigger than male goldfish.
Are goldfish male?
Some goldfish are male, while others are female.
Does a female goldfish have to have a male around to get pregnant?
Well yes you need a male goldfish and a female goldfish to have babies but it takes allot of time to breed them.
How does a goldfish make a baby?
Usually a female goldfish mates with a male goldfish!
What do goldfish start out with?
goldfish start out with female and then turn into male!!!!!!
Are fancy goldfish girls?
Fancy goldfish can be male or female.
Is a goldfish female bigger than a male?
Female goldfish are slightly bigger than males
Can a male goldfish stress a female?
yes
Why is there a difference in male and female energy needs?
i want to know how to tell a gender of a goldfish please tell me write back which goldfish is a male and which is a female?
How can you know if a goldfish is a male or a female?
If the fish is male it will be bright and colourful, if it is female it will be quite dull
Do male goldfishes have longer tales than female goldfishes?
No, both male and female goldfish's tails are the same length. The sex of a goldfish does not determine how long a goldfish's tail will be. Usually the parents and what type of variety of goldfish the fish is will.
How do you tell if your tropical goldfish is an male or female?
There is very little sexual dimorphism between male and female goldfish. Male goldfish are generally more slender, because they lack ovaries. Female goldfish may have swollen abdomens. Unless you are a professional, it is not advised to breed goldfish at home, because they cannot lay their eggs due to selective breeding. The eggs must be squeezed out of the female, when they are ready.
