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Fish Saltwater Care: easy Semi-aggressive

Eightline Wrasse

Pseudocheilinus octotaenia
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Other names: Eight-lined wrasse, Eight line wrasse, Octotaenia
Group: Marine fish · Family: Labridae · Origin: Indo-Pacific — from East Africa to the Hawaiian and Ducie islands, north to the Yaeyama Islands

A larger and tougher relative of the sixline wrasse, with eight thin reddish lines along its pinkish-yellow body. It grows to 13 cm; it leaves corals alone but hunts small shrimp and crabs.

Will it suit my tank?

Last updated October 16, 2026

Temperature
24–27°C
pH
8.1–8.4
Adult size
13 cm
Minimum tank size
200 liters
Social structure
Solitary
Swimming zone
Middle
Diet
Carnivore
Breeding
Egg scatterer

Water parameters

Temperature24–27°C
pH8.1–8.4
Recommended range
May escape, needs a lid Eats shrimp At most 1 per tank

Overview

October 16, 2026 · Suggest an edit

The eightline wrasse is a close relative of the sixline wrasse (P. hexataenia), a great favorite in aquariums; it grows larger and is distinguished by the eight thin longitudinal lines on its body. It spends the day roaming rock crevices and hunting small crustaceans. It is a hardy fish that switches easily to prepared food; however, it can become cantankerous as it grows and may harass small, shy fish. Specimens are wild-collected.

Tank Setup

October 16, 2026 · Suggest an edit
  • At least 200 liters and 90 cm in length; plenty of rock crevices and hiding places.
  • Salinity specific gravity 1.023–1.026, pH 8.1–8.4, temperature 24–27°C.
  • It can jump; a lid is recommended.
  • Reef-safe with caution: It leaves corals alone, but eats small ornamental shrimp, crabs and occasionally small snails.

Diet

October 16, 2026 · Suggest an edit

Carnivorous; in the wild it eats mainly bottom-dwelling crustaceans, along with some small mollusks and sea urchins. It is fed twice a day with frozen mysis, brine shrimp, chopped seafood and granules.

Behavior and Compatibility

October 16, 2026 · Suggest an edit

Semi-aggressive. It can be cantankerous towards its own kind, other Pseudocheilinus species and small, peaceful fish added later (e.g. fairy wrasses, small gobies); for this reason it is recommended to add it to the aquarium late.

Good companions: Tangs, dwarf angelfish, clownfish, damselfish, large gobies and blennies.

Avoid: Ornamental shrimp, small crabs, sixline wrasse, dottybacks, very shy small fish.

A short profile for this species

The Eightline Wrasse page has the basics, but the sections below have not been written yet. If you keep this species, write a section from your own experience; it will be published under your name after editor approval.

Tank mates

This list is calculated automatically from the species profile and grows as new species are added to the catalog. Try it in the planner for a definite answer.

Should not be kept together

Hobbyist notes

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Change history and contributors
  1. Page created · October 16, 2026