Baby bettas are slow growers so it may take about a few months but not that long! But I recommend chopping up his normal flakes or pellets because her/his mouth is about the size of a baby fingernail! Hope this helps
Betta fish can be from 2 to 4 inches long when fully grown.
A normal length for a fully grown Betta male is around 2 inches excluding the tail fin.
A full grown cheetah is about 3 feet long.
A Liger full grown is very long like around10-14feet they are very long and tall.
A six month old betta is already full grown and able to breed. As long as they're not fancy guppies with long bright fins they may be okay, some bettas are just more aggressive than others.
A body length of around 2.5 inches is a well grown male.
A male golden retriever can get 4 ft long.
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When full grown they are 7-8 inches long including the tail. By 6 months old they are full grown usually earlier.
39 feet
our full grown male maincoon was 54 inches long. he was pink in color.
A full grown amazon river dolphin can grow up to 20 feet