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How Many Glofish In A 30-Gallon Tank? Answers For All 5 Species!

You can keep about 12-15 glofish tetras, 14-15 glofish danios, 4-6 glofish bettas, and 9-10 glofish barbs in a 30-gallon tank – Not together, of course! But unfortunately, a 30-gallon tank is still not big enough for feisty glofish sharks that need about 50 gallons each to thrive comfortably. 

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What Do Baby Glofish Look Like? Photos And Videos!

Baby glofish look just like the babies of their original species. However, like their parents, they glow under the blue LED light. They don’t have much coloration when first ‘hatched’ and during the first few days of their lives when they’re in the wiggler stage. However, they develop pretty colors taking after their parents as they grow. 

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Do Glofish Eat Each Other? Real Answers!

There are five different glofish species. And luckily, none of them have an appetite for each other. Although glofish sharks, bettas, and barbs are aggressive fish, they still don’t eat each other or any other fish. And glofish danios and tetras are petite fish that can barely fit any other fish into their mouths. 

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Are Glofish Aggressive? Why Are They Fighting?

Glofish tetras, danios, and barbs are schooling/shoaling fish. While they are sociable most of the time, they become aggressive when kept in numbers less than 5-6. Glofish bettas, especially males, are extremely territorial and aggressive. However, the ‘most aggressive glofish’ titleholders are glofish sharks. 

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Why Is My Glofish Swimming Sideways? 3 Reasons Why!

The most prevalent reason behind glofish swimming sideways is swim bladder disease. A swim bladder is a gas-filled internal organ that helps bony fish like glofish maintain buoyancy. And when this bladder is impacted due to illness, injury, or any other abnormality, the fish will have a hard time maintaining its buoyancy – resorting to swimming erratically like sideways. 

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What Temperature Do Glofish Need? Do They Need A Heater?

The temperature for glofish should fall between 60-81°F (15-27°C). So far, there are 5 glofish species, and they’re all tropical fish. Therefore, they prefer warmer water and need a heater. Ideal temperature range for glofish tetras is 60-80°F, for glofish barbs is 74-80°F, for glofish danios is 65-77°F, for glofish bettas is 78-80°F, and for glofish sharks is 75-81°F. 

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