Remi Masson / Group of Black bullhead (Ameiurus melas) shoaling to protect themselves against predators, River Rhone, Rhone-Alpes, France, July.

Juergen Freund / Convict blennies / False catfish, juvenile, (Pholidichthys leucotaenia) amidst a fan coral. Misool, Raja Ampat, West Papua, Indonesia,

Franco Banfi / Black mexican catfish (Rhamdia guatemalensis) inside cenote Tajma Ha, Quintana Roo, Yucatan Peninsula, Mexico.

Luke Massey / Cocoi heron (Ardea cocoi) with Catfish prey (Loricariidae) attacked by Black collared hawk (Busarellus nigricollis) Pantanal, Brazil..

Luke Massey / Cocoi heron (Ardea cocoi) with Catfish (Loraciidae) attacked by a Black collared hawk (Busarellus nigricollis) Pantanal, Brazil..

Remi Masson / Shoal of Black bullhead (Ictalurus melas) in a lake. Alps, France

Loic Poidevin / White stork (Ciconia ciconia) eating Black bullhead (Ameiurus melas) Vendee, France, July

Eric Medard / Black-crowned night-heron (Nycticorax nycticorax) with catfish prey, taken at night with infra-red remote camera trap. Rhone, France, May.

Rolf Nussbaumer / Black vulture (Coragyps atratus) adult eating catfish, Dinero, Lake Corpus Christi, South Texas, USA.

Michel Roggo / Black bullhead / American catfish (Ameiurus melas) Europe

Norbert Wu / Striped Catfish (Plotosus lineatus) school of venomous juveniles feeding, Sulawesi, Indonesia

Alain Ghignone/ BIA / Great Cormorant (Phalacrocorax carbo) with Black Bullhead (Ameiurus melas) prey, Piedmont, Italy