I've had success with up to 30 for about 2 years but I'd reccomend up to 15 just so you don't have any problems.
Glofish actually need 20 gallons despite what stores are marketing now - they need to live in a shoal of at least 6. It would be best if you could get a bigger tank.
I wouldn't go less than 10 gallons. Glofish are active fish that need plenty of swimming room. A long, shallow tank is better for them than a standard tank.
Glofish actually need more space than people believe. If you are going to have 5, then you need a 20 gallon tank. Because they need to be in a group, you need at least 5 to 6, and they need space for swimming and growingPlease note that Glofish are quite different from Goldfish.
No, A Seahorse can only live in saltwater and a glofish can only live in freshwater. Seahorses do not do well with other fish anyways.
The recommended number of shrimp that can comfortably live in a 20-gallon tank is around 20 to 30 shrimp.
depends, can a ten gallon tank live in a goldfish
A 20-gallon tank can comfortably house around 5 to 7 mollies.
No. The tank is far too small to hold more than the Glofish (genetically changed Danio malabaricus) ). A (nominal) 3 gallon tank when it has water to within an inch of the top and a couple of inches of gravel as a substrate will only be holding just over 2 gallons of water. (Glofish) Zebra Danios grow to around 1.5 inches so you will see that the 2 glowfish (Danios) add up to 3 inches by themselves. So they are too much for the tank. The Black skirt Tetra (Gymnocorymbus ternetzi) grows to over 2 inches so it would need an absolute minimum of 3 gallons of water to live in and 10 gallons is the recommended size tank for them.
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Danios or glofish would be a good fish to put in the tank. They are schooling fish which means you would need at least three and I wouldn't put more than 5 in a ten gallon tank.
The fishfood you but from the petstore.
No shark can live in a 3 gallon tank. It would be a nice home for a Betta though!