Luke Massey / Giant otter (Pteronura brasiliensis) feeding on a catfish (Loricariidae) with Cocoi heron (Ardea cocoi) scavenging remnants, Rio Cuiaba, Brazil

Luke Massey / Giant otter (Pteronura brasiliensis) feeding on a Pleco catfish (Loricariidae) Rio Cuiaba, Brazil

Luke Massey / Gant otter (Pteronura brasiliensis) feeding on Catfish (Loricariidae) in the Rio Cuiaba, Brazil

Luke Massey / Giant otter (Pteronura brasiliensis) feeds on a Catfish (Loricariidae). in the Rio Cuiaba, Brazil

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..

Luke Massey / Cocoi heron (Ardea cocoi) with Catfish (Loraciidae) Pantanal, Brazil..

MYN / Martin Taylor / Suckermouth catfish (Hypostomus sp.) close to Manacapuru, Brazil. Meetyourneighbours.net project

MYN / Andrew Snyder / Pleco (Hypostomus macushi) Iwokrama, Guyana. Meetyourneighbours.net project

Willem Kolvoort / Catfish (Hypostomus paucimaculatus). Tutu creek near Aurora, Suriname, September.

Willem Kolvoort / Armored Catfish (Hypostomus gymnorhynchus). Gran Rio near Awadan, Suriname, September.

Willem Kolvoort / Armoured Catfish (Hypostomus gymnorhynchus) on a sunken branch. Gran Rio, Suriname, September.