Goldfish Care: Never give your goldfish more food than they can eat in a few minutes. Leftover food decomposes and pollutes the tank. If food remains uneaten, remove it. A 30 gallon aquarium with gravel and few river rocks is recommended. You should never keep your goldfish in a bowl or other small container. Gold fish are omnivorous and do not require special diet as tropical fish, however you should buy food made specifically for goldfish, because their nutritional needs are not the same as those of other fishes. Read More

Betta (Betta Splendens) This variety of Betta has a striking, elaborate tail that differentiates it from other Betta fish. These fish have been bred over the years to enhance the fins and remarkable variety of colors of the males, as well as making them increasingly combative. Therefore, only one male should be kept in a tank; however, smaller, shorter-finned females may be housed together.

Clownfish and Damselfish
are the only species of fish which can avoid the stings of an anemone, which can be quite potent. The exact mechanism by which this is accomplished is the subject of debate.
Clownfish in an aquarium environment can exist very well without an anemone (this may be advisable as most anemones are extremely difficult to keep alive even for experienced aquarists). Read more

Although it may be hard to believe, The best way to get a pair of good breeding angels is to pick out at least 6 good quality juvenile angels from a breeder or a reputable pet shop and place them in a tank of their own with plenty of space, water changes at least once a week and a variety of foods, in about 9 months they should reach adult size and they will pair off and then put them in a tank of their own. If the babies are left with the parents they usually won’t spawn again until the babies are removed from their tank. Read more

Molly, platy, swordtail and guppy species
Livebearers in general are not aggressive and are good community fish with other fish of similar size. Most livebearers are schooling fish and do best in groups of 5 or more. The schools generally develop a hierarchy with a dominant male that will be the most brightly colored fish in the group.
It is best to have schools with only one male to several females. If you wish to have more than one male, be sure you add several extra females for each male to eliminate aggression.
Livebearers generally enjoy harder water, and will benefit from 1 to 1.25 teaspoons of non-iodized salt per gallon being added to the aquarium water. Indeed, the molly is often kept in saltwater aquariums and is considered to be a saltwater fish! Also, some of these fish like the platy, the short-finned molly, and the swordtails are cold water fish and so can be kept without heaters.
Because the young can immediately hide from predators from the moment of birth, livebearers don’t need to be as prolific as egg layers; livebearers will commonly produce only 20-40 young although a few may drop as many as 150.
The females of the Livebearing families of Toothcarps (which includes the Guppies, Mollies, Swordtails, and Platys), Four-eyed Fishes, and Halfbeaks, through a process called “superfetation”, have an amazing ability to store unused sperm from the male fish in her body for several months.
The female is then able to have young several times after just one mating!

Bleeding Heart Tetra is a hardy, peaceful, schooling species that should be kept in groups of six or more. It does extremely well when kept with other peaceful fishes, such as Megalamphodus, Corydoras and Nannostomus species.
Cardinal Tetra Millions of cardinals are caught wild and exported from Brazil every year.
Neon Tetra was the first wild-caught fish that really set the tropical fish hobby into a dither, and contributed much to establishing the “tropical” fish hobby.
Breeding Tetra Tetras are egg scatterers that do not tend their eggs or fry and so a separate spawning/fry tank is needed. Spawning occurs usually between pairs, although some species spawn in schools.