Stock Footage of Small colourful Betta Fish in Aquarium.

The Guppy is a small, colourful species of fish found in tropical freshwater environments.
Photo provided by Flickr
There isn’t really anything that would suit your requirements because of the small size of your tank, especially since you want 4-5 fish alswell as wanting them to be colourful. I recommend you get a larger tank, then you would be able to have fish such as killifish, paradise fish and some types of barbs.
Small but colourful Fish - Video of Ellesmere Port, Cheshire - TripAdvisor
Photo provided by Flickr
are a family Mullidae of about 55 species of perciform fishes, associated worldwide with tropical .:186 They are typically about 20 cm long, though the , grows to 55 cm. Goatfish are tireless feeders, possess a pair of long ("whiskers") protruding from their chins resembling a goat’s beard. They use these to rifle through the sediments in search of a meal. Like goats, they seek anything edible; , , and other small are staples. Many species of goatfish are conspicuously coloured and have the ability to change their colouration depending on their current activity. By day, many form large inactive (non-feeding) schools: these aggregates may contain both conspecifics and heterospecifics. For example, the yellowfin goatfish school with . When they do that, the yellowfins changes its colouration to match that of the snapper. By night the schools disperse and individual goatfish head their separate ways to loot the sands. The diurnal changes from a lemon-yellow to a pale cream when feeding. Other nocturnal feeders will shadow the active goatfish, waiting patiently for overlooked morsels. Goatfish stay within the shallows, going no deeper than about 110 metres. Most species do not tolerate water, so they do not enter or the mouths of . small neon saltwater fish | Ideas for unusual or colourful small reefsafe fish ..
Photo provided by Flickrsold and recommended for aquarists after small, colourful schooling fish.
Photo provided by FlickrColourful Fish Print Small Handbag / Small Tote / Ladies - Etsy
Photo provided by Flickr
Although small in size, these beautifully coloured, cool freshwater fish will surely take advantage of every bit of space in your tank and are one of the easiest fish to care for. They love being in groups, so the bigger the group, the happier they will be, so don’t be afraid of keeping as many as you want.Listed below are some of the popular fishes that may be found in the coastal waters of Mauritius. Local names are shown in italics. The colours of the fish have been described as observed under normal daylight and might not always match those on some photos that have been taken under water. The feeding habit gives an indication of the bait that might be used, if one intends to go fishing. Squid, octopus, shrimp, and sea-snail flesh are good baits for Carnivorous, , or piscivorous fish; fresh bread is fine for herbivorous or omnivorous fish. (Small fish, however, should be released!)Although small in size, these beautifully coloured fish will surely take advantage of every bit of space in your tank. Neon Tetra's love being in groups, so the bigger the group, the happier they will be.
Not to be confused with Mandarin Fish (Chinese Perch). The mandarinfish or mandarin dragonet ( Synchiropus splendidus ), is a small, brightly-colored member of the dragonet family, which is popular in the saltwater aquarium trade. A lesser-known species, these are probably the single most colorful and vibrant fish I’ve ever seen. The mandarinfish is native to the Pacific, ranging approximately from the Ryukyu Islands south to Australia. Yes! They are definitely the most colourful fish in the world.Bettas (often called Siamese fighting fish) are domesticated varieties of the species Betta splendens. The males have been bred to have exceptionally long, colourful fins. They find it difficult to swim against strong currents, and because of this tend to be rather lethargic animals. While you can keep them in larger tanks if you want, male bettas do perfectly well in tanks as small as 5 gallons in size.The rainbowfish are a family (Melanotaeniidae) of small, colourful, found in northern and eastern , , islands in , and the in Indonesia.