Urgent · Fish & aquariums
Fish buoyancy distress
Floating upside down, sinking, or swimming sideways can come from swim bladder issues, constipation, infection, or poor water.
Immediate safe actions
- Test water parameters and correct any problems first.
- Keep water temperature stable at the upper end of the species' normal range.
- Lower the water level in a hospital tank so the fish can reach the surface easily.
- Fast for 24–48 hours if constipation is suspected.
What NOT to do
- Do not add salt or medications without identifying the species' tolerance.
- Do not handle the fish out of water.
- Do not 'pop' or squeeze the fish.
Information to gather for the vet
- Water parameters
- Diet type and feeding amount
- Body shape changes (bloating, pineconing scales)
Red flags
- Scales raised like a pinecone
- Bulging eyes
- Unable to right itself for days
- Red streaks or ulcers
Veterinary escalation
- Pineconing, ulcers, or worsening = aquatic vet.
General educational information only. Species differ greatly — always confirm with a licensed veterinarian or animal poison service.