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Can a Pajama Cardinalfish Live With a Sea Cucumber, Black?

~ Possible with caution

Verdict from our compatibility engine, assuming a typical 90-gallon reef tank. Score: 67/100.

Why

  • Schooling species — Pajama Cardinalfish needs 5+ companions; add at least 4 more
  • Fully compatible — Sea Cucumber, Black is a good fit for this tank

It can work if…

  • Social concern — review this species' social requirements before adding

Both species at a glance

Pajama Cardinalfish

Sphaeramia nematoptera

Aggression:
peaceful
Min tank:
10 gallons
Reef safe:
safe
Diet:
carnivore

Full Pajama Cardinalfish care guide →

Sea Cucumber, Black

Holothuria atra

Aggression:
peaceful
Min tank:
20 gallons
Reef safe:
safe
Diet:
omnivore

Full Sea Cucumber, Black care guide →

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