Clownfish or anemonefish are fishes from the subfamily Amphiprioninae in the family Pomacentridae. Thirty species are recognized: one in the genus Premnas, while the remaining are in the genus Amphiprion. In the wild, they all form symbiotic mutualisms with sea anemones. Depending on species, anemonefish are overall yellow, orange, or a reddish or blackish color, and many show white bars or patches.

Marine angelfish are perciform fish of the family Pomacanthidae. They are found on shallow reefs in the tropical Atlantic, Indian, and mostly western Pacific oceans. The family contains seven genera and approximately 86 species. They should not be confused with the freshwater angelfish, tropical cichlids of the Amazon Basin.

Anglerfishes are fish of the teleost order Lophiiformes. They are bony fish named for their characteristic mode of predation, in which a fleshy growth from the fish’s head (the esca or illicium) acts as a lure. Anglerfish occur worldwide. Some are pelagic (dwelling away from the sea floor), while others are benthic (dwelling close to the sea floor); some live in the deep sea (e.g., Ceratiidae), while others on the continental shelf.

The orbicular batfish, also known as the circular batfish, orbiculate batfish, round batfish, or orbic batfish is a popular aquarium fish which occurs naturally in the tropical waters of the Indian and Pacific Oceans. In the wild, the orbicular batfish is found in brackish or marine waters, usually around reefs, at depths from 5 to 30 meters. Its range extends from the Red Sea and East Africa in the east to the Tuamotu Islands in French Polynesia in the west, and from southern Japan in the north to northern Australia and New Caledonia.

Tilefishes are mostly small perciform marine fish comprising the family Malacanthidae. They are usually found in sandy areas, especially near coral reefs.

Commercial fisheries exist for the largest species, making them important food fish. However, the US Food and Drug Administration warns pregnant or breastfeeding women against eating tilefish and some other fish due to mercury contamination. The smaller, exceptionally colorful species of tilefish are enjoyed in the aquarium.

Blenny (from the Greek ἡ βλέννα and τό βλέννος, mucus, slime) is a common name for a type of fish. The term is ambiguous, having been applied to several families of perciform marine, brackish, and some freshwater fish sharing similar morphology and behaviour. Six families are considered “true blennies”, all grouped together under the suborder Blennioidei; its members are referred to as blennioids. About 833 species are found in 130 genera within the suborder.

Cardinalfishes are a family, Apogonidae, of ray-finned fishes found in the Atlantic, Indian, and Pacific Oceans; they are chiefly marine, but some species are found in brackish water and a few (notably Glossamia) are found in fresh water. A handful of species are kept in the aquarium and are popular as small, peaceful, and colourful fish. The family includes about 370 species.

Anthias are members of the family Serranidae (basses, basslets, groupers) and make up the subfamily Anthiadinae. Anthias make up a sizeable portion of the population of pink, orange, and yellow reef fishes seen swarming in most coral reef.

.Ostraciidae is a family of squared, bony fish belonging to the order Tetraodontiformes, closely related to the pufferfishes and filefishes. Fish in the family are known variously as boxfishes, cofferfishes, cowfishes and trunkfishes. It contains about 23 extant species in 6 extant genera.

The dottybacks are a family, Pseudochromidae, of fishes in the order Perciformes. Around 100 species belong to this family.They are found in the tropical and subtropical Indo-Pacific, where most inhabit coral reefs.

Dragonets are small, perciform, marine fish of the diverse family Callionymidae found mainly in the tropical waters of the western Indo-Pacific. They are benthic organisms, spending most of their time near the sandy bottoms, at a depth of roughly two hundred meters.  Male dragonets form dominance hierarchies and act extremely aggressively towards each other. The fish feeds entirely on benthic sources, primarily copepods, amphipods, and other small invertebrates living on blades of sea grass.

An eel is any fish belonging to the order Anguilliformes which consists of four suborders, 20 families, 111 genera and about 800 species. Most eels are predators.

The foxface rabbitfish (Siganus vulpinus) is a species of fish found at reefs and lagoons in the tropical Western Pacific. It belongs to the rabbitfish family (Siganidae) and is sometimes still placed in the obsolete genus Lo. They are omnivorous, eating mostly algae and zooplankton

Goatfishes are characterized by a pair of chin barbels, which contain chemosensory organs and are used to probe the sand or holes in the reef for food. Their bodies are deep and elongated, with forked tails and widely separated dorsal fins. They feed on worms, crustaceans, molluscs and other small invertebrates. 

Gobies are fishes of the family Gobiidae, one of the largest fish families comprising more than 2,000 species in more than 200 genera. Most of them are relatively small, typically less than 10 cm (3.9 in) in length. Gobies include some of the smallest vertebrates in the world.

The hawkfishes are strictly tropical, perciform marine fishes of the family Cirrhitidae associated with the coral reefs of the western and eastern Atlantic and Indo-Pacific.

The hogfish (Lachnolaimus maximus), is a species of wrasse native to the western Atlantic Ocean, with a range from Nova Scotia, Canada to northern South America, including the Gulf of Mexico. This species occurs around reefs, especially preferring areas with plentiful gorgonians. This species is currently the only known member of its genus.

.Pterois is a genus of venomous marine fish, commonly known as lionfish, native to the Indo-Pacific. Pterois, also called zebrafish, firefish, turkeyfish or butterfly-cod, is characterized by conspicuous warning coloration with red, white, creamy, or black bands, showy pectoral fins, and venomous spiky fin rays.

Parrotfishes are a group of about 95 species traditionally regarded as a family (Scaridae), but now often considered a subfamily (Scarinae) of the wrasses. They are found in relatively shallow tropical and subtropical oceans throughout the world. Most parrotfish are herbivores, but some species eat a wide variety of microscopic reef organisms

Pipefishes look like straight-bodied seahorses with tiny mouths. The body and tail are long, thin, and snake-like. They each have a highly modified skeleton formed into armored plating. This dermal skeleton has several longitudinal ridges, so a vertical section through the body looks angular, not round or oval as in the majority of other fishes.

The Tetraodontidae are a family of primarily marine and estuarine fish of the order Tetraodontiformes. The family includes many familiar species, which are variously called pufferfish, puffers, balloonfish, blowfish, bubblefish, globefish, swellfish, toadfish, toadies, honey toads, sugar toads, and sea squab.

The sandperches are a family, Pinguipedidae, of fishes in the order Perciformes. Sandperches typically live on sand or rubble substrates in shallow seas. The anterior end of the fish is cylindrical and the posterior end partially flattened. The eyes are on the top of the head and the fish lie on the seabed, propped up by their widely separated pelvic fins. Several members of the large genus Parapercis, perhaps all, are sequential hermaphrodites, starting their adult lives as females and later becoming males, often with significantly different colourings and markings.[1]

Snapper, any of about 105 species of fishes of the family Lutjanidae (order Perciformes). Snappers are found, often in abundance, throughout the tropics. Active, schooling fishes with elongated bodies, large mouths, sharp canine teeth, and blunt or forked tails, snappers are usually rather large, many attaining a length of 60–90 centimetres (2–3 feet). They are carnivores and prey on crustaceans and other fishes.

Squirrelfish are found in tropical parts of the Indian, Pacific and Atlantic Oceans, with the greatest species richness near reefs in the Indo-Pacific. Being largely or entirely nocturnal, they have relatively large eyes. During the day, they typically remain hidden in crevices, caves, or under ledges. Red and silvery colours dominate. They mainly feed on small fishes and benthic invertebrates,

Sweetlips are a species of fish belonging to the grunt family. They are characterized by their big, luscious lips and come in a variety of vivid colorations. They are one of the harder species of saltwater fish to keep in the aquarium both due to their size and difficulty in adapting to life in captivity.

Tilefishes are mostly small perciform marine fish comprising the family Malacanthidae. They are usually found in sandy areas, especially near coral reefs. Tilefish feed primarily on small benthic invertebrates, especially crustaceans such as crab and shrimp. Mollusks, worms, sea urchins and small fish are also taken.

Triggerfishes are about 40 species of often brightly colored fish of the family Balistidae. Often marked by lines and spots, they inhabit tropical and subtropical oceans throughout the world, with the greatest species richness in the Indo-Pacific. Most are found in relatively shallow, coastal habitats, especially at coral reefs.