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The bluestreak cleaner wrasse (Labroides dimidiatus) is one of several species of cleaner wrasses found on coral reefs from Eastern Africa and the Red Sea to French Polynesia. Like other cleaner wrasses, it eats parasites and dead tissue off larger fishes' skin in a mutualistic relationship that provides food and protection for the wrasse, and considerable health benefits for the other fishes. It is also notable for having potentially passed the mirror test, though this is not without controversy. Taxonomy A genetic analysis of L. dimidiatus revealed the population fell into two monophyletic clades, with Indian Ocean populations generally having different stripe widths to western Pacific fishes. The Japanese cleaner wrasses, though, fell within the same group as Indian Ocean fish, despite differing in appearance, and both clades overlap around Papua New Guinea.Two closely related cleaner wrasse species, Labroides pectoralis and Labroides bicolor, were grouped inside the L. dimidiatus clade, so the bluestreak cleaner wrasse may in fact be polyphyletic, incorporating several species. Description  This is a small wrasse, averaging 10 cm (3.9 in) long, at most 14 cm (5.5 in). It can be recognized thanks to a wide longitudinal black stripe running along the side and eye; the back and the stomach are white (sometimes slightly yellowish). This white part changes to a bright blue on the front of the animal, while the black band widens at the tail. The young are black with an electric blue line. Distribution The bluestreak cleaner wrasse is found on coral reefs in the tropics from the Red Sea and Indian Ocean to the western Pacific (including Papua New Guinea, Japan, Fiji, and French Polynesia).[5] It was first recorded from the Kermadec Islands Marine Reserve north of New Zealand in 2015, after researchers examined hundreds of hours of unused documentary film footage. Cleaning Cleaner wrasses are usually found at cleaning stations. Cleaning stations are occupied by different units of cleaner wrasses, such as a group of youths, a pair of adults, or a group of females accompanied by a dominant male. When visitors come near the cleaning stations, the cleaner wrasses greet the visitors by performing a dance-like motion in which they move their rear up and down.The visitors are referred to as "clients". Bluestreak cleaner wrasses clean to consume ectoparasites on client fish for food. The bigger fish recognise them as cleaner fish because they have a lateral stripe along the length of their bodies, and by their movement patterns. Cleaner wrasses greet visitors in an effort to secure the food source and cleaning opportunity with the client. Upon recognising the cleaner and successfully soliciting its attention, the client fish adopts a species-specific pose to allow the cleaner access to its body surface, gills and sometimes mouth.[citation needed] Other fish that engage in such cleaning behavior include goby fish (Elacatinus spp.) The bluestreak cleaner wrasse is known to clean balaenopteridae, chondrichthyans, homaridae, octopodidae, and dermochelyidae In different regions, the bluestreak cleaner wrasse displays various degrees of dependency on clients' ectoparasites as a primary food source. In tidal environments such as the Great Barrier Reef, the bluestreak cleaner wrasse is a facultative cleaner that feeds more on corals than on fish clientele.Juvenile bluestreak cleaners are seen to bite their clients more often than the adults within that region, thus changing the dynamic of the known mutualistic relationship.However, in regions where the bluestreak cleaners are solely dependent on clients' parasites, fish who have access to cleaning services have better body condition than those without cleaner access. In the Marsa Bareika of the Ras Mohamed Nature Reserve, Egypt, the bluestreak cleaner wrasse live in specific sectors of the shallow reefs and are shown to rely on ectoparasites from species such as the brown surgeonfish and white belly damselfish. In this region, fish that visit cleaner wrasses have lower antibody responses than those without cleaner access, suggesting that cleaner access may decrease the need for active immunity. Reproduction Cleaner wrasse males defend specific living territories from other males in which they are able to have control over the females in those territories. When the dominant male no longer exists in that territory, one of the larger females is able to change sexes to take control over that territory.

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The DaVinci Ocellaris Clownfish (Amphiprion ocellaris) is a captive-bred designer morph prized for its unique, swirling white markings that resemble a painter's brushstrokes. Each individual features a completely unique pattern of connected and curvy white bands.  Key Characteristics Appearance: Features a vibrant orange body with distinctive, flowing white patterns. Unlike standard ocellaris clowns, the white bands are often connected or elongated and delicately edged in black.  Grading: Marketed in different grades based on the amount of white. Grade B features wavy lines with distinct stripes, Grade A has fused stripes on both sides, and Extreme DaVinci features the most white, with multiple stripes connecting.  Origin: This morph does not exist in the wild. It was selectively bred in aquaculture facilities by crossing standard Ocellaris with other designer morphs like the Wyoming White clownfish.  Aquarium Care Temperament: Peaceful, active, and well-suited for both beginner and advanced marine hobbyists. Tank Size: A minimum of 75-90 liters (20 gallons) is recommended. Reef Compatibility: 100% reef-safe. They readily host bubble-tip anemones or even soft corals. Diet: Omnivorous; easily feeds on high-quality flakes, pellets, and enriched frozen foods like mysis and brine shrimp. Size & Lifespan: Reaches an adult size of 3 to 4 inches (7.5–10 cm) and can live 8 to 12+ years with proper care.

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Amphiprion ocellaris, commonly known as the Ocellaris clownfish or False Percula clownfish, is a small (up to 11 cm/4.3 inches), brightly colored saltwater fish famously depicted in Finding Nemo. It has an orange-to-reddish-brown body with three white, black-outlined bands and a symbiotic relationship with sea anemones.  Physical Characteristics Coloration: Typically vibrant orange with three vertical white bands: one behind the eye, one in the middle, and one on the tail base. Color Variations: A naturally occurring black variant exists, often referred to as the Darwin Ocellaris. Distinctive Features: The middle white band has a forward-projecting bulge. Fins are outlined with fine black lines. Distinction: A. ocellaris is often mistaken for Amphiprion percula, but ocellaris has thinner black edging around the white bands and a taller dorsal fin. Eye: Features a muddy brown ring around the pupil, unlike the bright orange ring of A. percula.  Habitat and Behavior Location: Found in the tropical waters of the Indo-Pacific, including the Great Barrier Reef and Southeast Asia. Symbiosis: Lives in shallow reefs and lagoons (usually shallower than 50 feet) within the tentacles of specific sea anemones, including Heteractis magnifica and Stichodactyla gigantea. Social Structure: Known for living in small hierarchical groups, where they are protandrous hermaphrodites—the largest fish is the female, and the next largest is the male.  Diet and Reproduction Diet: Omnivorous, feeding on plankton, algae, and small invertebrates. Breeding: They are oviparous (egg-laying) and monogamous. Eggs are laid near the host anemone, and the male is responsible for cleaning and fanning them until they hatch, which usually happens after sunset.  Aquarium Care Popularity: One of the most popular marine fish for aquariums due to their hardy nature and suitability for captive breeding. Lifespan: Can live up to 12 years in captivity. 

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The Orangeback fairy-wrasse (Cirrhilabrus aurantidorsalis) is a small, colorful fish known for its vibrant orange back, which contrasts with a magenta stripe along its body and a shimmering belly. Males are more intensely colored, especially during courtship, and have a dark red "crown" marking. They inhabit coral reefs in the Indo-Pacific, live in small groups with one male and several females, and are popular in the aquarium trade for their peaceful nature and activity level.  Appearance Coloration:  Has a brilliant orange or golden-orange back, a magenta stripe running the length of the body, and a belly that can be pink, blue, or purple.  Male features:  Males have more intense colors and a dark red crown-like marking on the head. During courtship, their colors intensify significantly.  Female features:  Females are less vibrant, with a reddish-brown body, white face, and white belly.  Body shape:  Slender and elongated body.  Habitat and behavior Habitat:  Found in the Indo-Pacific, specifically in the eastern Tomini Bay and Lembeh Strait, on reef slopes and edges with rubble areas.  Social structure:  Lives in small groups (harems) consisting of one male and several females. All are believed to start as females, with some transforming into males.  Temperament:  Peaceful and active fish, making them suitable for reef aquariums. They are reef-safe and will not harm corals or invertebrates.  Jumping:  Known to be good jumpers, so a tight-fitting lid on the aquarium is essential.  Diet Primary food: Zooplankton.  Aquarium diet: Readily accepts a variety of meaty foods, such as frozen mysis shrimp, brine shrimp, and other high-quality flakes, pellets, and frozen/live foods.   

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The Acanthurus japonicus, or Powder Brown Tang, is an Indo-West Pacific surgeonfish with a laterally compressed, oval body that can reach up to 21 cm in length. Its coloration varies based on its mood, from brown to blue to yellow, but it is distinguished by a prominent white band between the mouth and eye, a bright orange stripe on the dorsal fin, and a yellow band on the caudal peduncle. It is a herbivorous, territorial fish that typically lives in small to large aggregations in reef environments.  Physical description Body shape: Oval and laterally compressed.  Size: Can grow up to 21 cm (8.3 in) in length.  Coloration: The body color can range from brown to blue to yellow, depending on the fish's emotional state.  A wide, white band runs from the lower part of the eye to the upper lip.  A bright orange or pink band is present along the soft-rayed part of the dorsal fin.  The caudal peduncle is black with a yellow base.  Fins: Dorsal fin: Has 9 spines and 28–31 soft rays.  Anal fin: Has 3 spines and 26–29 soft rays.  Caudal fin: Is truncate.  Pectoral fins: Have yellow bases.  Habitat and behavior Habitat: Lives in clear lagoon and seaward reefs in the Indo-West Pacific, typically in shallow, exposed areas.  Diet: Herbivorous, feeding on algae and seaweed.  Social behavior: Can be found alone or in small to large aggregations. They are territorial and can be aggressive towards other fish, especially other tangs or conspecifics, which can lead to fights. 

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