Your 50 gallon tank will probably have some form of substrate (gravel) displacing some water, and it most certainly will not be filled to the absolute brim so assume the tank is actually holding about 42 gallons of water. Then do the calculations as you follow the basic rules.. The basic rules are. 1 inch of fish needs at least 1 gallon of water (a Red Tailed Black shark is about a 6 inch fish) Every tank must have a permanently running cycled filter. Every tank needs at least 50% of its water replaced every week.
Gallon House Bridge was created in 1916.
Sharks need a good water flow (current) and almost perfect water. If you can provide a perfect habitat and have all the necessary equipment including suitable filtration a 30 gallon tank would not be big enough to house any but the tinyest of sharks (no bigger than 20 inches) and then only for a short time because the shark would outgrow the tank very quickly.
No, sharks are aquatic creatures and cannot survive out of water.
Size of a large house cat
Actually, they are there because of an adequate food supply of insects. Catch them and take them outside. You might explore the outer parameters of your home to see if there is a way that they are getting into the house.
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If you can safely get to the pets, then remove them from the house; if not, then they would need to be left in the house.
I have several short tailed shrews running around the house and I often catch them scavenging for leftover food among the unwashed dishes in my kitchen. They do not seem to be as scared of people as the ordinary house mice though.
The convoy lead the President to the White House safely.
Get someone else to do it!!
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