Tag: Humpback Grouper (Cromileptes altivelis)

Although the Humpback Grouper (Cromileptes altivelis) is without doubt one of the rarest species of Grouper found in local waters (it was practically unknown locally until one adult individual appeared at Sail Rock in mid 2011), it may actually be the most easily identified.

Growing to a maximum length of around 70cm the Humpback Grouper is easily identified by its body shape alone.

With its small sloping head appearing quite odd in relation to the rest of its body, it appears similar in shape to the unrelated Barramundi (Lates calcarifer), giving rise to one of its many "common names" of Barramundi Grouper/Cod.

The Humpback Grouper is generally pale, almost white - pale olive green or brown overall (sometimes with a number of darker blotches) with numerous dark spots, the spots on the head being smaller than those on the head and fins.

With the exception of the posterior area of the dorsal fin, which is noticeably larger, all other physical features of the species are distinctly Grouper-like.

Although the Humpback Grouper (Cromileptes altivelis) is without doubt one of the rarest species of Grouper found in local waters (it was practically unknown locally until one adult individual appeared at Sail Rock in mid 2011), it may actually be the most easily identified.

Growing to a maximum length of around 70cm the Humpback Grouper is easily identified by its body shape alone.

With its small sloping head appearing quite odd in relation to the rest of its body, it appears similar in shape to the unrelated Barramundi (Lates calcarifer), giving rise to one of its many "common names" of Barramundi Grouper/Cod.

The Humpback Grouper is generally pale, almost white - pale olive green or brown overall (sometimes with a number of darker blotches) with numerous dark spots, the spots on the head being smaller than those on the head and fins.

With the exception of the posterior area of the dorsal fin, which is noticeably larger, all other physical features of the species are distinctly Grouper-like.

Alan's picture
Humpback Grouper (Cromileptes Altivelis)

This photo shows the very rare Humpback Grouper (Cromileptes Altivelis) that appeared at Sail Rock in 2011 hiding in the same location at which it could frequently be found, a deep crevice opposite "the canyon" on the

Alan's picture
Humpback Grouper (Cromileptes Altivelis)

This photo of the very rare, and oddly shaped Humpback Grouper (Cromileptes Altivelis) that appeared at Sail Rock in 2011 clearly shows the distinctive shaped that characterizes the species.