Eight Line Wrasse Care Guide
Pseudocheilinus octotaenia · Saltwater Wrasse

What Eight Line Wrasse look like
The Eight Line Wrasse, Pseudocheilinus octotaenia, exhibits a striking coloration characterized by vibrant blue and yellow hues, with eight distinct horizontal lines running across its body. This species can reach a maximum adult size of approximately 4 inches (10 cm). Sexual dimorphism is evident, with males typically displaying more intense coloration and elongated dorsal fins compared to females. Defensive adaptations include a streamlined body that allows for rapid bursts of speed to evade predators, as well as the ability to hide within crevices of the reef. Unique morphological features include a pronounced lateral line system that aids in detecting water movements and potential threats, along with sharp, conical teeth adapted for feeding on small invertebrates.
Behavior & temperament
The Eight Line Wrasse is known for its active and inquisitive nature, often found swimming in the mid to upper levels of the water column. It exhibits a social hierarchy, typically forming small groups or pairs, with dominant males displaying territorial behavior during breeding seasons. Breeding occurs in a lek-like fashion, where males display to attract females. The species is generally considered peaceful but can exhibit territorial aggression towards similar-sized wrasses. Its behavior includes darting movements and frequent foraging, showcasing its adaptability in reef environments.
Diet & feeding
In the wild, the Eight Line Wrasse primarily feeds on small crustaceans and zooplankton, making it an opportunistic carnivore. In captivity, it requires a varied diet that includes high-quality frozen or live foods such as brine shrimp, mysis shrimp, and finely chopped seafood.
Behind the name
The genus name 'Pseudocheilinus' is derived from the Greek 'pseudo' meaning 'false' and 'cheilinus' referring to a genus of wrasses, indicating a resemblance to other wrasse species. The species name 'octotaenia' comes from the Greek 'octo' meaning 'eight' and 'taenia' meaning 'band' or 'stripe', referring to the eight distinctive lines on its body.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Eight Line Wrasse?
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