No, a Koi is a carp. It comes from the Japanese word Nishikigoi which literally means 'coloured carp'.
Any tank under 10 gallons is not suitable for fish, but you can have perhaps a few ghost shrimp, or use it for live plants
it depends if the turtle is small if its small it can live in small places example a small fish tank with some rocks in it a big turtle should live in a large tank with rocks in it
Ghost Shrimp are scavengers just like a crayfish they will eat whatever excess food is lying on the bottom of the tank.
A 5 gallon fish tank would have to be completely cleaned out at least 3 to 4 times a week as it's really too small to have any fish; it would be great for a few ghost shrimp, or just some live plants instead
Neons
If your ghost fish keeps jumping out of thee tank, it might be because it is in a tank with territorial fish that does not want it in the tank and keep forcing it out. It does not feel comfortable there so it jumps out.
Small or Big it should be kept in a huge tank with Filter and Oxygen 10 gallons per Goldfish At least
If the goldfish is a fancy variety, it can live alone in a 20 gallon tank. Goldfish do not belong in tanks any smaller than this as they grow very large
The gas tank on the 2011 Rolls-Royce Ghost holds 21.8 gal..
The gas tank on the 2013 Rolls-Royce Ghost holds 21.8 gal..
The gas tank on the 2012 Rolls-Royce Ghost holds 21.8 gal..