Fish  

The Biesbosch is a unique freshwater wetland and the waterways, at varying depths and types of river beds offer a habitat to a wide range of fish sorts. Some 30 different species of fish, some unique to the Biesbosch, can be found.

 
Bream, (Abramis brama) - 
Bleak, (Alburnus alburnus)
Eel, (Anguilla anguilla)
   
Asp, (Aspius aspius)
   
Barbel, (Barbus barbus)
Silver Bream, (Blicca bjoerkna)
Gibel carp, (Carassius auratus gibelio)
Nose Carp, (Chondrostoma nasus)
Spined Loach, (Cobitis taenia) -
Powan, (Coregonus lavaretus)
Bullhead, (Cottus gobio)
Carp, (Cyprinus carpio)
Pike, (Esox lucius)
Three-spined Stickleback, (Gasterosteus aculeatus)  -
Gudgeon, (Gobio gobio)
Ruffe, (Gymnocephalus ernua)
Chub, (Leuciscus cephalus) -
Orfe, (Leuciscus idus)
Dace, (Leuciscus leuciscus) -
Thinlip grey mullet, (Liza ramada) -
Smelt, (Osmerus eperlanus)
Perch, (Perca fluviatilis)
Flounder, (Platichthys flesus)
Ten-spined Stickleback, (Pungitius ungitius)
Bitterling, (Rhodeus sericeus amarus)
Roach, (Rutilus rutilus)
Trout, (Salmo trutta)
Rudd, (Scardinius erythrophthalmus)
Welsh, (Silurus glanis)
Pikeperch/Zander, (Stizostedion lucioperca)
Tench, (tinca)
Sea lamprey (petromyzon marinus)