To see a catfish, when you are dreaming, has meaning of duplicity and deceitfulness. Catfish alerts you to be cautious, because of someone who may not appear to be who they are. Their true self may be hidden or not easily perceived and understood.
Dream dictionary: catfish dream meanings
…Dreaming that you see fish in clear-water streams, denotes that you will be favored by the rich and powerful. Dead fish, signifies the loss of wealth and power through some dire calamity. For a young woman Dreaming of seeing fish, portends that she will have a handsome and talented lover. Dreaming of catching a catfish, denotes that you will be embarrassed by evil designs of enemies, but your luck and presence of mind will tide you safely over the trouble. To wade in water, catching fish, denotes that you will possess wealth acquired by your own ability and enterprise. Dreaming of fishing, denotes energy and economy | but if you do not succeed in catching any, your efforts to obtain honors and wealth will be futile. Eating fish, denotes warm and lasting attachments….
…If one sees an aquarium in his house filled with all types of catfish, or angelfish or similar fish that live in a home aquarium in a dream, it means being charitable or taking care of orphans or adopting children. If one sees himself reaching with his hand to the bottom of the seabed to catch fish in a dream, it means that he will acquire extensive knowledge in his profession and prosper from his trade. Otherwise, it could mean that one will become a spy. If the sea opens and unveils its treasures, and if one catches a goldfish from its belly in the dream, it means that God Almighty will reveal new spiritual knowledge to him in order to help him understand his religion and to receive guidance. If the goldfish leaves his hand and returns to the sea in the dream, it means that he will join…