PetFish.

Flickr/Leino88 Name: Neon Tetra Personality: Neon Tetras are active schooling fish, and very peaceful, according to Animal-World. Neon tetras are social, doing best in schools of at least six of their own. Care: This freshwater fish, which is possibly the most popular aquarium fish, requires at least a 10 gallon tank, according to FishLore.com, fully cycled, with a water temperature of 69 to 79 degrees Fahrenheit and a pH around 7.0, says the Age of Aquariums. They need open space for swimming, vegetation for hiding, and proper food like small flake foods and brine shrimp, according to bbayaquariums.com. Common Health Issues: It's not unusual for a neon tetra to live 10 years with proper ...

Flickr/TheEye - LN Name: Betta Fish (aka Siamese Fighting Fish) Personality: As their alias suggests, Bettas don't always do well with other fish; there are certain fish with whom they cannot get along, according to Aquarium Hobbyist. Male bettas, in particular, can be quite territorial towards other male bettas and other fish, specifically fish with lots of blue and red, fish with long flowing fins, or fish with similar shapes. Care: Aside from feeding your betta fish daily (or close to it, as they can go a day or two without food) and keeping their tank clean, there's not much involved in caring for them. While some people keep bettas in small vases, the best environment for this fish ...

Flickr/corrieb Name: Koi Personality: Koi are gentle, peaceful and mellow. Very large Koi can share a pond with much smaller Koi with no danger. Care: Koi are hardy fish that can live 30-50 years, according to Koi and Ponds. (The record stands at 233 years!) The most important aspect of care is quality of water. If water quality is poor, the fish can die quickly. The water must be in a pond (300 gallons per mature fish, and at least three feet deep) that remains a proper temperature and has filtration to keep the water clean. Nutrition is also extremely important, Koi and Ponds says. Koi will eat just about anything, but a proper diet will help them stay healthy and grow more ...

Flickr/protographer Name: Goldfish Personality: Goldfish are sociable and do well living with other fish. They will often swim to the surface to be fed. Care: Goldfish are easier to care for than many other pets, according to Good Goldfish Care. However, they are sensitive and changes to their environment can cause stress, which often leads to bad health. Avoid touching your goldfish unless it's absolutely necessary, and feed your fish once a day in the water, not by hand (this can pass dangerous germs on to them). Make sure to only add tank decorations that are designed for aquariums. Be cautious about what kinds of fish you put together, suggests Good Goldfish Care. Even different ...