Planaria are small flatworms (~1-5mm) that thrive in overfed shrimp/snail tanks. Not directly harmful to fish but compete for food and indicate excess nutrients.
Overfeeding combined with established detritus. Planaria reproduce quickly when food + biofilm is abundant.
Always treat in a separate quarantine tank.
Don't overfeed shrimp tanks. Vacuum substrate during water changes.
Small white or tan flatworms on glass + decor. Worm population growing rapidly. Often visible at lights-out.
Overfeeding combined with established detritus. Planaria reproduce quickly when food + biofilm is abundant.
No Planaria (Genchem): Dose per manufacturer instructions. Safe for shrimp + snails. Most effective treatment.
Don't overfeed shrimp tanks. Vacuum substrate during water changes.
Mild cosmetic - not directly harmful
Browse the full disease database for 45 aquarium conditions with treatment protocols, or check the care library for prevention-focused husbandry guides. Use our symptom matcher to rank likely diseases from observed signs, the water parameter checker to diagnose related water-quality issues, or the QT timeline calculator to plan a treatment schedule.