In soft tissues, crepitus can be produced when gas is introduced into an area where it is normally not present. The term can also be used when describing the sounds produced by lung conditions such as interstitial lung diseaseâthese are also referred to as rales.
Bloodfin Tetra-Information about keeping and breeding Bloodfin Tetras in aquariums. Breeding the Black Tetra-Breeding notes for Gymnocorymbus ternetzi. Cardinal Tetra Fish-An introduction to Cardinal teras-Paracheirodon axelrodi. Cardinal Tetra-Information about all aspect of keeping and breeding Cardinal Tetras.
Most of the bony fishâthirty-nine of the forty-two ordersâare rayfinned fish; subclass Actinopterygii. The other three orders are fleshy-finned fish, members of the subclass Sacropterygii. Although much less numerous and diverse than the ray-fins, the fleshy finned fish are still interesting and important.