The humpback grouper, panther grouper, or also in Australia barramundi cod, Cromileptes altivelis, is a demersalmarine fish which belongs to the family Serranidae, the groupers.
The humpback grouper is a medium-sized fish which grows up to 70 cm. Its particular body shape makes this grouper quite impossible to mix up with other fishes. Its body is compressed laterally and is relatively high. This stocky and strange visual effect is accented by its concave profile and its elongated snout which gives it a humpbacked appearance. source