Bettas are beautiful but did you know they're happier in a small aquarium (they make 2.5 gallon ones!) with a heater...in that environment they're active and happy, not slumped and sad like in tiny containers. #fish
The fighting Australian crayfish (yabby) does not forget the face of its foes according to zoologists. In the study, after a fight, the loser yabby was isolated and given a choice between its opponent and another crayfish not involved in the fight. The loser yabby moved towards the opponent it knew as opposed to the rival it did not, revealing that a yabby is capable of visual identity not just an acute sense of smell.