21. Filial cannibalism occurs in some teleost  families and may have evolved to combat starvation. 22. Cystovaries characterize most teleosts , where the ovary lumen has continuity with the oviduct. 23. For example, marine teleost  fishes have the greatest latitudinal ranges at low latitudes. 24. Some teleosts  even have teeth in the pharynx. 25. Previous studies in teleosts  have only identified a single " lepr ". 26. In some teleosts , both genetics and the environment play a role in determining sex. 27. Teleosts  may spawn in the water column or, more commonly, on the substrate.28. Of the oviparous teleosts , most ( 79 percent ) do not provide parental care. 29. At the adult stage, a teleost  is able to produce viable gametes for reproduction. 30. Rockfish appear to be the longest living teleosts  with some species living over 100 years.