Symptoms & urgent help
A fish that stops eating
Appetite is useful information. Compare the change with temperature, behaviour and what the other fish are doing.
Observe one feeding
Check whether food is being offered in the right place and whether other fish take it first. For sturgeon, confirm suitable sinking food actually reaches the fish.
Review the timing
Record transport, new food, water changes and treatments. Stop offering repeated large meals that become uneaten waste.
When it needs investigation
Persistent appetite loss, weight loss or accompanying breathing and balance problems warrant professional help. Bring the feeding history and water results.
Sources & further reading
Original WakeyKoi wording, informed by the references below. Linked clinical resources explain the evidence and their scope; they have not reviewed or endorsed this website.
Related guides
Educational guidance cannot diagnose an individual fish. Breathing distress, severe injury or unexplained losses need prompt professional assessment.