FishBeginner care20g minimum

Pink streaked wrasse reef compatibility check

Pseudocheilinops ataenia

Quick answer

Pink streaked wrasse (Pseudocheilinops ataenia) is a beginner-level wrasse that needs at least 20 gallons. It is listed as reef safe; needs a tight lid. Temperament is peaceful and adults reach about 2.5 inches. ReefCrafter schedules it as middle-stage livestock, with no tank-age gate beyond a finished cycle.

Small peaceful wrasse option for covered nano and mid-size reefs.

Minimum tank
20 gallons
Care level
Beginner
Reef safety
Safe
Bioload score
0.8
Stocking stage
Middle
Flow need
Varied
Light need
None

Who it is for

Good fit for

  • ✓ Tanks of 20+ gallons at the animal's adult size.
  • ✓ Beginners following a slow, planned stocking order.
  • ✓ Newly cycled tanks with a compatible stocking list.
  • ✓ Reef tanks with corals and invertebrates.

Not a fit for

  • ✕ Tanks under 20 gallons, even while it is small.
  • ✕ Needs a tight lid.

Compatibility warnings

  • Needs a tight lid.
  • Check adult size against the final tank, not the fish or coral at purchase size.
  • Add livestock slowly so the bioload and nutrient export can keep up.
  • Use the planner when this animal changes the tank-size, flow, lighting, or stocking plan.

Professional planning context

  • Use the 20 gallon minimum as an adult-planning floor; display length, aquascape, and existing tankmates can raise that floor.
  • This can be planned early after cycling, but only after quarantine/acclimation logistics and stocking order are settled.
  • Professionals should model aggression by territory and introduction order, not only by care level.

Tank fit and maturity gate

Tank minimum
20 gallons

ReefCrafter uses 20 gallons as the planning floor for adult size, swimming room, nutrient load, and aggression margin.

Maturity gate
No special delay

This species can be planned early when the tank is cycled and the rest of the stocking list is compatible.

Care notes

Temperament
Peaceful
Reef safety
Safe
Adult size
2.5 in
Placement
Build dependent
Diet
Build dependent
Flow
Varied
Light
None
Bioload
0.8
Stocking stage
Middle

Related species

Equipment that fits

Related reading

Questions

What size tank does the pink streaked wrasse need?

ReefCrafter plans for at least 20 gallons, based on an adult size of about 2.5 inches, plus swimming room, nutrient load, and aggression margin. Use the adult size, not the size at purchase.

Is the pink streaked wrasse reef safe?

It is listed as reef safe in ReefCrafter's catalog. Watch for: Needs a tight lid.

Is the pink streaked wrasse good for beginners?

Yes. It is rated beginner care.

When should I add the pink streaked wrasse to my tank?

ReefCrafter treats it as middle-stage livestock, with no tank-age gate beyond a finished cycle. Add livestock slowly so nutrient export keeps up.