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.
Characteristics and Classification of Bony Fish: Some documents refer to the bony fish as the Osteichthyes, which used to be recognized as a class of organisms. Osteichthyes is still used commonly to refer to the two main types of bony fish: 1  Ray-finned fishes, or Actinopterygii.2  Lobe-finned fishes, or Sarcopterygii, which includes the coelacanths and lungfishes.haracteristics and Classification of Bony Fish: Some documents refer to the bony fish as the Osteichthyes, which used to be recognized as a class of organisms. Osteichthyes is still used commonly to refer to the two main types of bony fish: 1  Ray-finned fishes, or Actinopterygii.