I worked at a fish hatchery and some of the larger fish could tell if you were coming by to feed vs catch them. I think they recognized the fish net or maybe our posture?
They would also know if their food should float or sink, and rush to the appropriate area. I’d consider that a pretty decent memory
LyriumLychee t1_is60pyc wrote
Reply to Scientists have proved goldfish do have good memories and are able to navigate their surroundings. A team from Oxford University trained nine fish to travel 70cm (2.3ft) and back, receiving a food reward at the end. The study disproves the long-held belief goldfish have little or no memory. by Tardigradelegs
I worked at a fish hatchery and some of the larger fish could tell if you were coming by to feed vs catch them. I think they recognized the fish net or maybe our posture?
They would also know if their food should float or sink, and rush to the appropriate area. I’d consider that a pretty decent memory