They need lots of plants, rocks, and other hiding places, and should have slightly acidic water to thrive. The black neon is a peaceful tetra that works well in soft water community fish tanks. These markings make this tetra fish easy to distinguish from others that may look similar. The eye is marked above with fluorescent orange. The fish has an iridescent black body of deep obsidian black and a contrasting bright, neon horizontal stripe of green-yellow. The black neon tetra is one of the aquarium industry’s most unique tetra varieties. We’ll learn some basic care information and look at some tetra types pictures. Let’s take a look at the most commonly kept as aquarium tetras. We’ve gathered a list of tetras from all over the world, with some basic tetra care information for each species. The larger tetras are still pretty small – 2.5 inches is the general maximum size – so they still work well in average fish tank sizes, though they still also need to be in schools for optimal life. Some are big tetras and small tetras, but generally, they all make decent pets. There are more than 150 different tetra species. They generally all need the same water requirements – pH between 5.5 and 7, and a hardness of 4 kH to 8 kH.

They need their water temperatures to be between 70 and 75-degrees Fahrenheit. They do have specific parameters, of course, that you’ve got to keep to. Tetras are a pretty easy species to care for. They may get a little aggressive during feeding time if the aquarium is overstocked, but generally, they’re peaceful fish and won’t bother each other. They especially go after anything on the surface of the water. Whether we’re talking South American tetras or African tetras, these fish eat pretty much anything you put in front of them. They’re schooling fish, so they swim together in clusters and should be housed with other tetras. They come in a wide range of colors, including red, white, silver, black, blue, yellow, orange, black, fluorescent colors, and others. Tetras are common freshwater aquarium fish that originate in Central America, Africa, and South America. A 15 gallon, 20 inches long tank is the minimum recommended for a small group.4 More Things to Know About Types of Tetras Quick Intro to Tetras & Their Care

These fish can be kept in a community aquarium with larger fish, smaller fish may get their fins nipped by the tetra however the fin-nipping behavior of the tetra can be corrected by keeping it in a group of at least 6. The tank should have dense vegetation, open areas for swimming, a cover since these fish are jumpers, floating vegetation to help dim the light and gravel or sand substrate. To keep these fish in captivity water pH should be between 6.0 and 7.0 and water temperature should range from 68✯ to 78✯. Cosmic Blue Tetras are genetically modified to be fluorescent blue.

Tetras have a small rounded fin between the dorsal fin and the tail fin and many bones connecting the inner ear to the swim bladder providing an excellent hearing to these fish.

Blue tetra