What is the blue gills lifespan?

Why are starfish said to have pentaradail symmetry? Do sea urchin have backbone? Do guppies get lonely in a fish bowl? Where are swordfish located? What are the best types of fish to introduce into a tank of Australian rainbow-fish? What Farming and fishing are very important to what region? Are water lilies consumers producer or decomposer? Is a dogfish puffer saltwater? Can fish eat chocolate? Do bull sharks have predators? Does Pink Salmon reproduce asexually or sexually? What is a fish integument system? Why carp fishes called carp? Do male mollies fight with another male mollies? Can you use hot glue in a aquarium? WHAT FISH HAVE hallucinogenic properties when eaten? Are great white sharks indangered? How do you replace a Master Cylinder on a 1987 Winnebago Chiefton? What other organisms live near hermit crabs? What relationship is held between the tiger shark and the loggerhead sea turtle?