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Sounds like flip over disease. This is where the fish will lay sideways, either going close to the surface or down to the bottom of the tank. It can still swim but swims on it's side. You can Google it if this appears in your fish.
diseased.
It swims. It uses its fins to propel it forward and it wiggles side to side to move through the water easily.
A guppy is a fish and it swims in water. , Generally, they move up and down, side to side, and their movements are sometimes based on gender.
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A piranha swims the same way as any other fish by moving its tail from side to side which gives it forward propulsion in the water
Because your goldfish is dead.
* How do you kill a blonde? You put a scratch-and-sniff at the bottom of the pool. * There's a blonde, a brunet, and a redhead. There all on a island and the only way to get to the other side is to swim there. The brunet goes first, swims 50% of the way, and drowns. Then the redhead goes, she swims 75% of the way, then gets eaten by a shark. Then blonde goes, swims the whole way, gets tired, swims back, THEN swims 50% of the way, and then drowns.
If I remember right, suicune is on the right hand side floating on the water. Ofcoarse you can't actually get to him but once you see him, there will be a short clip of suicune running away from you again
A cow fish swims just like any other fish does: by swishing or wiggling its tail from side to side to propel it through the water.
Most fish have an organ called a swim bladder that contains gas. They use it to con troll their balance and buoyancy while swimming. When a fish is dying it loses control of its swim bladder, so, yes, a lot of the time, when a fish is dying, it will sway from side to side or irregularly rise and fall in the water or even start swimming or floating upside-down.