Possum Wrasse Care Guide
Wetmorella nigropinnata · Saltwater Wrasse
What Possum Wrasse look like
The Possum Wrasse (Wetmorella nigropinnata) exhibits a distinctive elongated body that can reach a maximum adult size of approximately 4 inches (10 cm). Its coloration is predominantly a vibrant greenish-blue with intricate patterns of yellow and white spots, which serve as camouflage among the reef substrate. Sexual dimorphism is subtle, with males generally displaying more vibrant coloration and larger dorsal fins compared to females. Notable morphological features include a pronounced lateral line, which aids in detecting vibrations in the water, and a set of small, sharp teeth adapted for grazing on small invertebrates and algae. The dorsal fin is long and continuous, contributing to its agile swimming abilities, while the pectoral fins are rounded and help in maneuverability within complex reef structures. Defensive adaptations include the ability to quickly retreat into crevices and the presence of a mucus layer that can deter potential predators.
Behavior & temperament
Possum Wrasses are generally solitary or found in small groups, exhibiting a social hierarchy where dominant individuals establish territories within their preferred habitats. They are primarily benthic dwellers, often seen hovering close to the substrate or among coral branches. Breeding behavior involves courtship displays, where males perform elaborate swimming patterns to attract females. Their temperament is typically peaceful, but they can exhibit territorial aggression towards intruders, especially during breeding seasons. Feeding behavior is diurnal, with individuals actively foraging during daylight hours, using their keen eyesight to locate prey among the reef. They are known to display a unique behavior of 'hovering' in place while scanning their environment for food.
Diet & feeding
The Possum Wrasse is primarily an omnivorous grazer, feeding on small invertebrates, zooplankton, and algae in the wild. In captivity, they thrive on a varied diet that includes high-quality pellets, frozen foods, and live foods such as brine shrimp and mysis shrimp.
Behind the name
The genus name 'Wetmorella' is derived from the name of the American ornithologist Dr. Wetmore, while the species name 'nigropinnata' translates from Latin as 'black finned', referring to the darker coloration of the fins.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Possum Wrasse?
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