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You study the available descriptions and pictures of the species that are available and also talk with other aquarists who may give you pointers and you also closely observe the fish to see if it/they have all the characteristic of an adult of that species.

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14y ago
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11y ago

They can breed starting at 3-4 months. Males' fins will still be relatively short at this point. By the time their fins have grown out all the way they're actually past the prime of their life. An adult betta is 1.5-2" long, not counting the fins.

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Q: How do you tell if a fish is an adult?
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How do you tell an adult betta fish from a baby betta fish?

Adult betta fish, specifically the males, will grow in the majority of their fins as juveniles. When you see bettas in the stores for sale, they are typically around 2 years old already since it takes time for their full finnage to appear.


How can I tell if my Oscar fish pregnant?

Your Oscar can not get pregnant. It is an egg layer. It will not be adult or mature until it is around 6 inches long.


Do you separate baby fish after they hatch from the adult fish?

Yes, otherwise the parent or other adult fish may eat the newborn fry.


How can you tell a male bumblebee fish from a female?

There are many species of fish for which sex cannot be determined by any external signs. If by bumblebee fish you mean the bumblebee goby, then you simply can't tell. Adult males will be smaller than adult females, but its not a reliable way to tell the difference. If you are reffering to a bumblebee cichlid, then the males have 2-4 egg spots on the anal fin, where females will only have 1-2. Males have blue markings and females have yellow markings.


How does a 20-year-old tell her parents she is pregnant?

You are an adult - and adults make adult decisions. Where is the father of your baby? Tell him he needs to step up and be an adult too. Then, tell your parents what your "adult" solution is.


How does a clown fish grow from a baby to an adult?

- It eats food. - It grows - Its an adult


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first, you have to have a fish that is an adult (20+ years old). Then, you have to put the fish into the Sell Tank. Put the adult fish into the isolation tank, then press Species to set the price. When you are ready, press the sell button and wait.


What kind of baby fish are clear with an orange tail fin?

I'm sorry, but there are too many fish, that when they are in their larval stage, they have that same appearance. You will have to wait until the fish is in its post-larval (a few weeks to a month or two after hatching) or juvenile stage (near adult) to be able to tell what kind of fish it is.


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Im sorry to tell you this...But I was checking up on your fish...and they sadly drowned.. lmaooo


What problems could take place if all the fish eggs survived to grow into adult fish?

Well it is very unlikely for all of the fish's eggs to survive to adult but if they do they can fight so if i were you i would separate them.


Which will win a convict or a fighting fish?

Win what? be more specific. If you mean in a territorial dispute, an adult fighting fish will get eaten (literally) by and adult convict cichlid. but if the cichlid and the fighting fish are of the same size then the fighting fish would be at an advantage.