Melanistic Upside Down Catfish (Synodontis nigriventris) Puffer this color morph displays a

this color morph displays a strong concentration of yellow

Probably someone with an overactive imagination couldn’t pronounce "Batrachomoeus trispinosus" and needed to call them something

high aeration

Frozen/thawed fish

Large catfish

Melanistic Upside Down Catfish (Synodontis nigriventris) Puffer this color morph displays aThis fish normally swims upside down, methodically looking for food at the waters surface, under large plant leaves, and around submerged wood and rocks. In addition to its unusual upside down swimming, these fish are not affected by dorsal light response (DLS), which is a tendency of a fish to tilt its body toward the sun or bright artificial lighting.