Originally Posted by HatsuneMiku
bettas have longer memory recall then goldfish .. you wouldn't have to reenforce the behavior as much in a day with bettas as you do with goldfish ..
and bettas are a lot easier to train then goldfish IME
I think they both have short term memory span of 5 seconds. Even if they don't, it will take the same amount of times to reinforce the behavior. Memory only helps with doing the behavior but it doesn't help them relate their behavior with the positive reinforcement.