California Blackworm tank mates
Lumbriculus variegatus
3 rated pairings from the California Blackworm care guide. Compatibility here means water, temperament, tank zone and adult size all line up — the note on each card says why. California Blackworm needs at least 5 gallons on its own; every companion adds to that.
Good matches
2 · Compatible with normal care — watch space and numbers.Ember Tetra
Hyphessobrycon amandae
10 gal min · 0.8" adult · Peaceful
Small, peaceful fish that will readily consume blackworms without decimating the colony instantly
White Cloud Mountain Minnow
Tanichthys albonubes
10 gal min · 1.5" adult · Peaceful
Cool-water species matching blackworm temperature preferences; will eat worms as a nutritious supplement
Use caution
1 · Works in the right setup; read the note before combining.Planning this tank?
Run the whole stock list through the calculator — it checks bioload and schooling numbers, not just pairings.