Dr. Oscar Trujillo U.A.B.C.S.

chondrichthyes sharks gnathostomata agnatha elasmobránquios fish tiburones squatinidae angel sharks bramble sharks dogfish sharks ground sharks mackerel sharks carpet sharks bullhead sharks chimaeras jawed vertebrates hagfish taxonomy latimeria coelacanths gombessas thornbacks stingrays wedgefishes sawfishes guitarfishes skates —numbfishes narcinidae torpedo electric rays torpedinidae electric rays pristiophorus saw sharks lamprey monomícticos régimen fluvial ecosistema fluvial rios agua arroyos bacterias; indicadores ambientales rajiformes machos male reproduc hembra female peces reproduction tiburón fishes demanda bioquímica del oxígeno intrusión salina sobreexplotación nitrógeno fósforo disponibilidad de agua calidad de agua marco teórico esquema presión estado respuesta indicadores ambientales temperatura viento amícticos lagos meromicticos reproducción roughies soldierfishes squirrelfishes thread-tails tube-eyes dories beardfishes moon fish opahs lanternfishes blackchins flagfins lizardfishes jellynose fishes lightfishes hatchetfishes bristlemouths celacanto actinistia dipnoi needlefishes silversides stargazers blennies convict blennies cichlids mullets gobies sleepers cardinalfishes nurseryfishes toadfishes cusk-eels beryciforms tubeshoulders slickheads sardines anchovies herrings bonytongues mooneyes spiny eels halosaurs bonefishes tarpons ladyfishes tenpounders bowfins sturgeons paddlefishes bichir dragonfishes marine smelts whitefish salmon trout salamanderfishes galaxiids electric eel knifefishes catfishes african pikes african tetras darters tetra characins beaked sandfishes milkfishes lungfishes