Actinopterygii are Ray-finned Fishes. Rays and Lungfishes are not Actinopterygii. instead, iNaturalist classifies them in the “Other Animals” iconic taxon (Animalia). if you want to look specifically for Rays, you can look for taxon_id = 448201 (Infraclass Batoidea) or one of its ancestor taxa, if you want to find Lungfishes, you can look for taxon_id = 85509 (Order Ceratodontiformes) or one of its ancestor taxa.
frogmouth catfish is one of the common names defined for Chaca chaca. do you have a better common name for it? if so, you can add or request for a curator to add an appropriate common name.