Purchasing Healthy Fish

Fortunately, there are things you can look out before making a purchase:

Fins should not be falling, particularly the dorsal fin. A late collapse is a bad sign for most fish, although for some species, this trick does not apply. Curl tail normally pumps against their body, that fish and butterflies have developed dorsal fins only when they are afraid.

In addition, fins must be intact. Look for choked, torn, ripped or fins. A few PIN May not be a problem if the fish seems to behave properly, but it is a sign of attention.

Watch the fish swim and mingle with other specimens in the tank. For example, smaller fish should leave the path of a dominant fish swim by, this indicates that the fish is feeling normal. A sick fish May dominant allow fish to intimidate, because he is too ill to get out of the way.

Consider breathing fish, comparing the movement to another gills of fish. It is normal for fish to breathe faster than others, but generally fish tend to move their gills at the same pace as those around them in a tank. Gill rapid movement is a bad sign because it means that the fish is probably stressed.

Other indicators of stress dark spots and discoloration. If you buy a book on fish before shopping, it will be easier to determine what is normal for coloring a fish, and what comes out of the ordinary.

The fish swim back and forth, looking for bumps and raised growths, small white crystals on fins, or black spots. Fish with these characteristics have infestations of parasites. Crus on fins that look like cauliflower are an indication of a viral infection and stress. In general, if you notice several fish in a store with signs of stress and disease, not to buy any fish from that location.

And remember, the fish that bullying in the fish store will probably do the same at home to avoid buying fish that show aggressive behavior.

For saltwater aquariums in particular, avoid buying or corrugated Queen Triggers, Sohal Tangs, or Go Angels. Avoid marine fish that grow more than six to eight inches, unless you're looking to add a slow-moving fish in your aquarium.

Take your time analyzing the fish to have time to look beyond the beautiful colors. It is easy to miss indicators of problems when you were mesmerized by a beautiful fish that swims your way. Take a good look at the fish skin and fins, and watch his movements over a period of time.