Remi Masson / Group of Black bullhead (Ameiurus melas) shoaling to protect themselves against predators, River Rhone, Rhone-Alpes, France, July.
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Remi Masson / Group of Wels catfish (Silurus glanis) gathered in the River Rhone, France, August.
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Shane Gross / Striped catfish (Plotosus lineatus) school in seagrass bed, feeding on Algae growing on Seagrass blades. Manado, North Sulawesi, Indonesia.
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Tony Wu / Striped catfish (Plotosus lineatus), school of juveniles feeding on cloud of plankton at night. Ariake Sea, Japan. September.
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Jurgen Freund / Striped catfish (Plotosus lineatus) schooling between boats docked at pier and litter on sea floor, taken with fisheye lens. Ambon Island, Maluku, Indonesia. 2018.
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Jurgen Freund / Striped catfish (Plotosus lineatus) schooling between boats docked at pier and litter on sea floor. Ambon Island, Maluku, Indonesia. 2018.
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Remi Masson / Group of Wels catfish (Silurus glanis) a tthe bottom of a river. River Loire, Indre-et-Loire, France. October.
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Remi Masson / European catfish (Silurus glanis) in the middle of a school of Fish (common bleak). River Loire, Indre-et-Loire, France. October.
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Remi Masson / Group of Wels catfish (Silurus glanis) at the bottom of a river. River Loire, Indre-et-Loire, France. October.
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Remi Masson / Giant wels catfish (Silurus glanis), longer than two meters, swimming above the bottom of the lake of Neuchatel, Switzerland.
Michel Roggo / Wels catfish (Silurus glanis), on the bed of the Aare river, with Zebra mussel (Dreissena polymorpha) Brugg, Canton of Berne, Switzerland. October. Photographed for The Freshwater Project.
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Georgette Douwma / Striped catfish (Plotosus lineatus) shoal, Bali, Indonesia.
David Hall / Striped eel catfish (Plotosus lineatus), shoal of juveniles. Komodo, Indonesia.
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Georgette Douwma / Kaleidoscopic image of Striped catfish (Plotosus lineatus) school feeding on sea bed. West Papua, Indonesia.
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Pascal Kobeh / Wels catfish (Silurus glanis) on the bottom of the river. Its face has a scar probably caused by a fishing hook. Cher River, Loir-et-Cher Department, France
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Pascal Kobeh / Two Wels catfish (Silurus glanis) on the bottom of a river. The one on the foreground has a scar on its face probably caused by a fishing hook, Cher River, Loir-et-Cher Department, France
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Cyril Ruoso / Wels catfish (Silurus glanis) group gathered in river bed. Loire river, France. November.
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Cyril Ruoso / Wels catfish (Silurus glanis) Loire river, France. November.
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Cyril Ruoso / Wels catfish (Silurus glanis) Loire river, France. November.
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Cyril Ruoso / Wels catfish (Silurus glanis) Loire river, France. November.
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Cyril Ruoso / Wels catfish (Silurus glanis) Loire river, France. November.
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Cyril Ruoso / Wels catfish (Silurus glanis) in the Tarn river, France, August.
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Cyril Ruoso / Wels catfish (Silurus glanis) in the Tarn river, France, August.
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Cyril Ruoso / Wels catfish (Silurus glanis) eating Mayflies (Ephoron virgo), dead at the surface of water because of public lighting. Tarn River, France, August.
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Cyril Ruoso / Wels catfish (Silurus glanis) eating Mayflies (Ephoron virgo), dead at the surface of water because of public lighting. Tarn River, France, August.
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Cyril Ruoso / Wels catfish (Silurus glanis) group gathered in river bed. Loire river, France. November.
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Cyril Ruoso / Wels catfish (Silurus glanis) group gathered in river bed. Loire river, France. November.
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Shane Gross / School of Striped eel catfish (Plotosus lineatus) move through seagrass, eating the algae growning on the seagrass blades. Manado, Indonesia.
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Pascal Kobeh / Close-up of the head of a Striped eel catfish (Plotosus lineatus) Sulu Sea, Philippines.
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Remi Masson / Wels catfish (Silurus glanis) swimming at bottom of Lake Neuchatel. Switzerland. September.
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Remi Masson / Wels catfish (Silurus glanis) swimming at bottom of Lake Neuchatel. Switzerland. September.
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Alex Mustard / School of young Striped catfish (Plotosus lineatus). Bitung, North Sulawesi, Indonesia. Lembeh Strait, Molucca Sea.
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Stephane Granzotto / Wels catfish (Silurus glanis), group on riverbed, River Loire, France. October.
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Stephane Granzotto / Wels catfish (Silurus glanis), group on riverbed, River Loire, France. October.
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Stephane Granzotto / Wels catfish (Silurus glanis) and Common carp (Cyprinus carpio), three on riverbed amongst branches, River Loire, France. October.
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Stephane Granzotto / Wels catfish (Silurus glanis) and Common carp (Cyprinus carpio), three on riverbed amongst branches, River Loire, France. October.
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Stephane Granzotto / Wels catfish (Silurus glanis), nine on riverbed, shoal of fish in background. River Loire, France. October.
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Stephane Granzotto / Wels catfish (Silurus glanis), albino amongst roots, River Loire, France. June.
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Stephane Granzotto / Wels catfish (Silurus glanis) and diver, view from below. River Loire, France. October.
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Stephane Granzotto / Wels catfish (Silurus glanis), five on riverbed, diver observing. River Loire, France. October.
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Stephane Granzotto / Wels catfish (Silurus glanis), group above riverbed. River Loire, France. October.
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Remi Masson / Group of Wels catfish (Silurus glanis) gathering on the bottom of the River Rhone, France. June.
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Remi Masson / Group of Wels catfish (Silurus glanis) gathering on the bottom of the River Rhone, France. June.
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Remi Masson / Giant wels catfish (Silurus glanis) sitting on the bottom of a river. Rio Ebro, Spain.
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Remi Masson / Wels catfish (Silurus glanis) swimming in the river Rhone, France.
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Remi Masson / Giant wels catfish (Silurus glanis) sitting on the bottom of a river. Rio Ebro, Spain.
