How do I know if my fish is suffering?
Loss of appetite. Weakness or listlessness. Loss of balance or buoyancy control, floating upside down, or ‘sitting’ on the tank floor (most fish are normally only slightly negatively-buoyant and it takes little effort to maintain position in the water column)
What causes fish to swim erratically?
Fish swimming erratically:
This could have been a form of play for your fish. If this swimming behaviour persists, it could be due to poor water quality. Some causes of this poor water quality can be incorrect pH levels, ammonia build-up, high amounts of nitrates or nitrites, or temperature changes.
Can fish have aneurysms?
Fish that are subjected to chronic exposure to microplastic fibres suffer from issues including aneurysms and gill damage, according to a new study.