With colleagues , he has developed global maps of the biodiversity distribution of reef fishes and other faunal groups .
In parallel with work on reserves , Callum has also been active with the Coral Reef Fish Specialist Group of the World Conservation Union ( IUCN ) .
With colleagues , Callum has developed global maps of the biodiversity distribution of reef fishes and other faunal groups .
In parallel with work on reserves , Callum has also been active with the Coral Reef Fish Specialist Group of the World Conservation Union ( IUCN ) .