Pink Streaked Wrasse Care Guide: Pseudocheilinops Ataenia Reef
Few small wrasses are as quietly stunning as the pink streaked wrasse (Pseudocheilinops ataenia), a 7 cm fish washed in salmon-pink with horizontal yellow lining and a deep green eye ring. They are peaceful, reef-safe, fully sand-independent, and one of the few reef-safe wrasses that thrive in nano systems under 200 litres. This guide from Gensou Aquascaping at 5 Everton Park covers the conditions that keep this delicate beauty alive long-term in Singapore reefs.
Identification and Size
Pseudocheilinops ataenia is monotypic — there is only one species in the genus. Adults max out at 7 cm with males slightly larger and more brightly coloured than females. The pink body, yellow lateral lines and emerald eye ring are unmistakable. Do not confuse with the larger and more aggressive flame wrasses (Cirrhilabrus jordani complex) which share warm colour palettes but reach 10-15 cm.
Tank Size and Cover Requirements
Minimum 90 litres for a single pink streaked wrasse, 150 litres for a pair. They are jumpers — every wrasse is — so a fully covered tank with mesh tops or a euro-brace lid is non-negotiable. They spend most of the day weaving through rockwork, so a generous aquascape with multiple caves and overhangs reduces stress. They do not bury in sand, unlike many fairy wrasses.
Diet and Pod Feeding
Pink streaked wrasses are micro-predators that pick copepods and amphipods from rockwork. They will accept pellet, frozen mysis and finely chopped seafood within a week of introduction, but a healthy refugium with chaeto and live pods underpins long-term health. Feed two to three times daily with small portions. Refugium lighting, chaeto starter and copepod cultures live in the aquarium equipment range.
Temperament and Tank Mates
Among the most peaceful wrasses in the hobby. They tolerate other small fish, including dwarf gobies, tail spot blennies, royal grammas and clownfish. Multiple pink streaked wrasses cohabit in groups of 1 male to 2-3 females in tanks above 200 litres. Avoid pairing with aggressive wrasses (six line, melanurus) which will harass them off food.
Reef Compatibility
Fully reef-safe. They do not nip corals, clams or ornamental shrimp. They are useful for controlling pyramidellid snails on Tridacna clams and small bristleworms in the rockwork. A nano reef with a pink streaked wrasse and a few peaceful gobies is among the most sustainable small reef configurations.
Water Parameters
Standard reef parameters at 25-26°C, salinity 1.025, pH 8.1-8.4, alkalinity 8-9 dKH, nitrate 2-10 ppm, phosphate 0.03-0.08 ppm. They are sensitive to ammonia and nitrite spikes, so adding them to a tank under three months old is risky. RODI top-off is mandatory; PUB tap chloramine kills them within days. Reliable salt mix, RODI cartridges and refractometers sit in the marine saltwater range.
Quarantine and Acclimation
Drip acclimate over 90 minutes from bag to a hospital tank. They are not particularly disease-prone but a 21-day quarantine catches any tag-along brooklynella or velvet from shipping. Avoid copper at full reef-fish doses — pink streaked wrasses tolerate it less well than tangs. Tank-transfer method or hyposalinity at 1.009 are gentler alternatives.
Sex Identification and Pairing
Males show brighter pink saturation and a pronounced anal fin marking. Females are paler with a more uniform body. Buying a pair from the same shipment usually works because they have already established hierarchy. Adding a second male to an established male is risky — the resident often kills the newcomer within 48 hours.
Singapore Sourcing
Pink streaked wrasses are uncommon imports — Iwarna and Aquamarin list them sporadically at SGD 80-150 per fish. Cebu sources are most reliable. They are sometimes mislabelled as “pink lined wrasse” or “yellow striped wrasse” in shop tanks, so confirm the scientific name before purchase. Always ask for video of feeding response in shop quarantine.
Long Term Care
Healthy specimens live 5-8 years in well-maintained reefs. Their colour intensifies in tanks with strong blue spectrum LED lighting and a varied pod-rich diet. They become noticeably bolder after 2-3 months, eventually picking food directly from feeding tongs. A nano-reef centerpiece that punches well above its size class.
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