Hi my son is getting into fishes and we are looking to get our first fish tank but we have zero knowledge about anything fish related. We visited our local pet store and the owner told us about Tetra glow fish. He said they are really easy to take care of and how cool they look in the dark. What would be a decent size of aquarium for a small group (3-4 maybe). We were looking for a 5 gallon but when I look online I get all sorts of different answers..! (Sorry for my English, it isn’t my first language)
Thanks for your answers!

Posted by Fun-Ad8915

5 Comments

  1. A good rule of thumb to follow is one gallon of water per inch of fish. These fish get to be about 2 inches when fully grown (at least that’s how big mine are), so 2 inches (gallons) x 4 fish = 8 gallons. So I’d recommend getting at least a 10 gallon tank. If you don’t want a tank that large, a 5 gallon tank is suitable for a single betta fish. They’re beautiful. I don’t have any myself, but from what I understand, they’re fairly easy to take care of and are a popular choice for kids.

  2. They must be kept in schools of six or more.

    These one follow the same requirements as their non GMO counterparts skirt tetras.

    So you’re looking at a 20 gallon minimum  with these fish, bigger if you want tankmates. 

  3. Impossible_Spell7812 on

    Found him years after I got into the hobby and only wish I’d found him sooner. https://aquariumscience.org/index.php/1-1-aquarium-beginner-guide/

  4. I’d say if you want these specific fish, a 20 gallon would be a good start. I promise you, just because it’s bigger than a 5 doesn’t necessarily make it more difficult. Sometimes tanks are easier to manage the larger you go. If you like the hobby, you’ll be happier you went bigger rather than smaller.

    If you don’t have the space for a 20 I’d say go at least to a 10 and look into good fish for that size. Tetras I really try to keep schools of at least 6-10. Guppies could be fun since they breed really quickly. So seeing guppy fry could be fun for your son.

  5. I would argue start with a betta in a 5 gallon. This way you can dabble with plants if you want, it’s easy to care for, and as long as you do it right, bettas are hard to mess up (imo, but you HAVE to do it right).

    If you’re set on these guys, they really need schools of 6 or larger and they probably need a 20 gallon like another user said.

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