What is a heart merman?

Is a plastic container ok for a fish to live in? How does a great white shark get it food? How can too much algae duckweed and elodea become a problem? Will sharks attack each other? Why is your Jack Dempsy fish turning black? How long does it take for a great white shark egg to hatch? What is another word for salmon eggs? How do fish stay still on water i mean what the part that make it can do this? Do goldfish have blood? What is the difference between native trout and hatchery trout? Are manta rays filter feeders? Which fish has more parasites? Is a ringed seal a consumer or producer? Do angel sharks lay eggs or give birth? Who is the bald pitchman for shark vacuums infomercials? What temperature do African Dwarf frogs have to be kept at? How would a mediterranen mermaid look like? What towns are the fishing shops on in HorseIsle? What do sharks dolphins and whales have in common? Is northern seahorse high pitch are low picth?