opline gourami, guppies ,hatchet fish
Danio fish like to swim on the top, and they like to swim back and forth all of the time( mine do)
Fish make bubbles at the top of the tank because they release excess air from their swim bladders, which helps them regulate their buoyancy and stay afloat in the water.
Bettas can swim anywhere in a tank but they tend to hang towards the top third most of the time.
sick fish loose their color they swim less they hide they stay at the corner they stay at the top or bottom of the tank
Different types of fish swim in different layers of the water. Top floaters, bottom dwellers and middle swimmers.
Different species of fish live at different levels of the water. So eather you have all top-dwellers, you don't have airation, you have only anabantois (bad spelling), or you have very poor water quality.
get onto of the TV the get onto the green balloon when your on the top frame jump onto the shelf where the fish food is. Then push it into the tank the press off on the button thingy down on the fish tank the swim to the bottom then there you go :)
The swim bladder makes your fish sink so it isn't floating to the top of the tank.If your fish is floating then it might be a swim bladder problem.Or your fish is dying.
Gold fish will swim upside down if they have a swim bladder infection, try feeding it fish food that sinks because, when it eats food at the top of the tank it swallows air that goes to it's swim bladder causing it to go upside down at the top or bottom of the tank. Hope I Helped :)
A top feeder is easy to differentiate from a bottom feeder because of there mouth bottom feeders will also suck things in the tank. You can tell the difference between a middle and a top feeder because of where they swim most of the time like cardinals and angel fish.
Fish have an organ called a swim bladder. This organ controls exactly where in the water a fish is. Its fins simply propel the fish in a direction. The swim bladder controls the up and down bit.
Usually community fish are the most active and they school together swimming back and forth throughout the tank. Stay away from the bigger fish who have a tendency to look for hiding places.