There are several species known colloquially as Pacu fish. They are all related to and larger than the Pirahna. They get VERY BIG. Over a metre and weighing in at over 60lbs. To the best of my...
The males (boars) have round heads but females (sows) have a type of flat, narrower head. Because of this difference in head shape, the sows ears appear to be much bigger than a boars. Because the...
Black Moors are fancy goldfish. They only show differences between the sexes when they are in breeding condition and that is usually Springtime. At that time the males develop white spots on their...