Close up of Black Spotted Grey Upside Down Catfish Suctioned Onto The Glass Of An Empty Aquarium Tank

synodontis upside down catfish fish catfish feeding freshwater aquatic aquarium tank pet mochokinae animal spotted eating sucker underwater closeup black spots zambezensis suction njassae hobby movement ocellifer ocellated one active syno dirty feces cleaning muddy water pet shop brown squeaker vertical poor pale clean glass black dots alone janitor exhibition empty grey gray tropical