Really it should only be about 2 because they will get a decent size and u may even have to remove them eventually A ten gal tank is not big enough to even consider housing 1 parrot fish. (Try a clown fish with an anemone) Parrot fish are marine and grow to around 2-3 feet long. Before you start keeping marines you need to do heaps of homework and research. (You will also need a fair bit of cash to set up properly too). If on the other hand you mean the (Taiwanese created) abominations called the "Parrot Cichlid" then I would advise you to give them a miss. These man made fish have deformed mouths (amongst other things) and are problematic to feed/keep.
id say 15 fish
It's generally not advisable to keep parrot fish and African cichlids together in a 55-gallon tank due to their differing temperaments and environmental needs. African cichlids are typically more aggressive and territorial, which can stress the more peaceful parrot fish. Additionally, their water parameters may vary, as African cichlids prefer harder, alkaline water while parrot fish thrive in softer conditions. It's best to choose species that are more compatible in terms of temperament and water requirements.
length and width for a 55 gallon fish tank
The rule of thumb is usually a gallon per fish, so six gallons would be good. If the fish are on the large side (like a goldfish), then a seven gallon tank would be ideal.
This is simply funny if it really means a fish tank.About 1025.5 for a standard 100 gallon fish tank if the beers are 12 fl oz.Remember fish tank gallon sizes are measured by outside dimensions.
Only 1. Usually a Betta is all that is kept in a 3 gallon tank
one
depends on the fishes size
one
The fish are not bad together. But way to many fish for a ten gallon tank. You put one fish for every gallon. They will probly do fine but you will have to clean more.
Depends on the size of the fish, but no more than a total of 17 inches of fish. 1 inch of fish per gallon of water.
you can put a betta in a 5 gallon tank