Fish don't have stomachs the way mammals do. Uneaten food rots in the tank, spikes ammonia, and makes everyone sick.
The two-minute rule
Feed only what your fish can finish in two minutes, once or twice a day. If food is still drifting after that, you fed too much.
Match the food to the fish
Floating flakes suit surface feeders. Sinking pellets suit bottom dwellers. Frozen or live foods make great occasional treats but shouldn't replace a balanced base diet.
Reading overfeeding before it becomes a crisis
Cloudy water within a day of feeding, a film on the surface, or food still visible on the substrate hours later are all early warnings that portions need cutting back — well before ammonia levels actually spike and put fish at risk.
Variety matters too
Rotating between flakes, pellets, and the occasional frozen bloodworm or brine shrimp gives a more complete nutrient profile than any single food alone, and most fish show noticeably better colour on a varied diet.
One fast day per week gives your fish's digestive systems a break and reduces tank waste. Healthy fish handle it without complaint.
