What date did the rusty crayfish arrive to Ontario?

Can there be rust around the hot water tank? Will goldfish die if water is under 50F? What to do if your guppy is close giving birth? Why do people have aquariums? My goldfish has red patches losing its tail and got the fin clamped shut? Are sharks harmless? What is a hink pink for an albino fish has a? How do you lower ammonia levels in fish tank? How do you get bp on cf? Do pond skaters eat algae? How was isma'eel a good son? Is salmon meat? Are there sharks in Nigeria? Why is your female guppy staying by the heater on her own? How fast does a yahmaha 65cc go? What fish can be put in a farm pond that eats only algae and can live through the cold winter? Who do shark hide from? How big can a Carcharhinus shark tooth get? How do seahorses clean themselves? What is the male counterpart of mistress?