Scuba Season

Cape Knifejaw

Oplegnathus conwayi

Sighting evidence at Coral Gardens, False Bay

Cape Knifejaw

Photo: Peter Southwood · CC BY-SA

The Cape knifejaw is an endemic South African reef fish that reaches impressive sizes at Coral Gardens, where the rich invertebrate community provides abundant food. These striking fish use their fused beak-like teeth — the adaptation that gives them their name — to crunch through encrusting animals and hard-shelled invertebrates on the reef surface. They are bold and often approach divers closely, and their distinctively patterned juvenile and adult phases make tracking individual fish's life stages a rewarding activity for repeat visitors.

Evidence at this site

27 records within 25 km

Confidence: medium

Seasonality

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.