iridescent shark catfish swims gracefully displaying its striking iridescence and streamlined body against a pristine

pangasianodon hypophthalmus freshwater fish tropical species aquarium aquatic life pet colorful anatomy characteristics catfish iridescence behavior marine biology habitat care setup fishkeeping breeding exotic identification pets diet underwater health ornamental maintenance collectors environment hobbyist ecosystems vibrant colors texture tank animals wildlife natural conservation enthusiasts habitats ecology biodiversity types aquarist diversity ai generated