41. For comparison, most marine teleosts have an osmolarity of only around a third of seawater. 42. This article is about the teleosts . 43. Teleosts are economically important to humans as is shown by their depiction in art over the centuries.44. Both the XY sex-determination system and ZW sex-determination system exist in teleost species. 45. It is uncertain how ocean acidification, caused by rising carbon dioxide levels, might affect teleosts . 46. Most fish are gonochorists, but hermaphroditism is known to occur in 14 families of teleost fishes. 47. Varieties of fish, such as teleosts , also use fast-starts to escape from predators. 48. Few studies have investigated the broad tissue distribution of " lep " in teleost fishes. 49. Typically, acute hypoxia causes hyperventilation, bradycardia and an elevation in gill vascular resistance in teleosts . 50. This approach led to the discovery of numerous previously unknown connections in the brain of teleost fish.