It is normal for fish to swim in all directions including away from you.
they swim
Then the fish would swim away.
they swim away
because when the fish is swimming it hass to use its bladder to swim away
they swim away from their predators
Tropical fish have adaptations such as bright colors for camouflage and attracting mates, streamlined body shapes for efficient swimming in warm waters, and specialized gills for extracting oxygen from low-oxygen environments. Additionally, some tropical fish have evolved unique behaviors to avoid predators or to find food in their specific habitat.
fish will swim away or hide behind a rock or vegetation
Most fish just swim away or hide.
It'll swim away or try to avoid the fish its afraid of.
to eat or swim away from the predator
No. Your fish has damaged its swim bladder.
there is no particular reason that your cat fish swims upside down but it could just be the kind of cat fish you have. it isn't abnormal for a cat fish to swim upside down because some can only swim that way.