pajama cardinalfish swim in water current, healthy, active animal in nano reef marine aquarium, easy to keep popular pet in led

adult apogonidae aquaculture aquamarine aquascape aquatic barrier biocoenosis biodiversity biology captive cardinalfish colorful commercial conditions controlled coral coralimorph decorative dwarf ecosystem environment exotic fauna fishkeeping free great hard hobby ichthyology keep life macro nematoptera ocean pajama pico polkadot reef research salt saltwater sea space sphaeramia spotted stripe tank tropical undersea underwater vulnerable wildlife