active air-cylinder apparartus assistance breathing-apparartus breathing-equipment bystanders checking damage danger emergency emergency-services equipment fire-and-rescue fire-brigade fire-fighting firefighters firemen helmets help hoses hosing house-fire loss oxygen-tank prepared protecting protection protective protective-clothing pumping pumps readiness ready red spectators suburban truck uniforms vehicle water aquarium-fish artificial breeders breeding colorful colors colourful colours common community-fish differences fish freshwater-aquarium-species guppies guppy guppy-strains hardy jar live-bearing-species millionfish pattern-variations patterns peaceful plastic-vegetation poecilia-reticulata popular rainbow-fish shapes Sizes small-size species tank-water temporary-container tropical-fish variable-food-preference variations variety widely-distributed aquarium corals fishes life nature ocean reef saltwater sea sealife seawater swim swimming tank tropical underwater zoo