Fish are the best introductory pets for any beginner, but choosing the right fish mix might be tough.
To make it easier for you to have a no fuss tank, here are some groups of common pet fish that get along well.
Neon Tetras, Glowlight Tetras, Harlequin Rasboras, White Clouds, Fancy Guppies, Corydoras Catfish, Glass Fish, Honey Gouramis, and Ghost Shrimp. These fish and shrimp are compatible and a few of them will do well in a 15-gallon aquarium with warm water. These fish are not compatible with most other species of fish, so if you’re planning to get any one of them, you should get them a friend from one from this group itself.
Danios, Swordtails, Mollies, and Platies, plus Bigger Tetras such as Black Skirt Tetras, Painted Tetras, Serpae Tetras, Red Eye Tetras, Black Neon Tetras, and Silver Tip Tetras. A few of these fish will do well in a 15-gallon aquarium with warm water. Each fish species in this group lives best in a group with fish from the same group. They’re quite calm as compared to other groups.
Angels. Freshwater Angels, plus Dwarf Gouramis and Neon Blue Gouramis, plus Neon Blue Rainbows make a nice compatible group of fish. These fish require a warm water aquarium.
Eventually, they’ll need an aquarium with at least 30-gallons of water, and an aquarium at least 18-inches tall is recommended for Angels.