"Baryonyx" grew up to between long and weighed 1.2 and 1.7 t (1.3 and 1.9 short tons). It had long arms which were probably used for holding on to prey, the claw on the first finger was 31 centimeters (12 in) long. It ate mostly fish, like a grizzly bear would; for this it had a long snout like a gharial, and straight, cone-like teeth perfect for fishing. It had a triangle-shaped crest on the top of its skull.