Wadatacce
The numfashi Shi ne tsarin da abubuwa masu rai ke samun iskar oxygen. Wannan numfashi na iya zama na huhu, reshe, tracheal ko cutaneous.
Dabbobin da ke numfasawa ta cikin gutsuttsuran dabbobin ruwa na ruwan sabo da ruwan gishiri, daga cikinsu akwai nau'ikan crustaceans, tsutsotsi, amphibians, mollusks da duk kifaye. Misali: shark, kaguwa, dorinar ruwa.
Gill respiration ne gills ko gills ke yi, wanda su ne sassan numfashi da ke tace iskar oxygen daga ruwa zuwa cikin jini da kyallen takarda. Wannan iskar oxygen yana da mahimmanci don numfashin salula. Gills suna tace iskar oxygen kuma suna fitar da carbon dioxide cikin muhalli.
Ire -iren gills
Gills su ne kyallen takarda da aka samar ta ƙaramin zanen gado ko filament na bakin ciki tare da tasoshin jini wanda ya dace da motsi na dabbobi a cikin muhallin su na ruwa. Galibi suna cikin sashin jikin dabba kuma yana iya zama na waje ko na ciki.
- Gills na waje. Suna faruwa a cikin dabbobi masu rarrafe ko a farkon juyin wasu dabbobi. Sune tsoffin abubuwa masu sauƙi waɗanda ke hulɗa kai tsaye da muhalli. Wannan yana da fa'ida da yawa, saboda ana iya lalata su cikin sauƙi kuma yana sanya wahalar motsi. Misali: kifin teku da tsutsa na wasu nau'o'in halittu masu rarrafe suna da kwararar waje.
- Gills na ciki. Suna faruwa a cikin manyan dabbobin ruwa. An ba su mafaka a cikin ramukan da ke ba su kariya. Misali: kifin kasusuwa (tuna, cod, mackerel) suna da operculum (fin da ke kare gills).
Misalan dabbobin da ke numfasawa ta hanji
| Clam | Tuna | Axolotl |
| Kod | Kifi | Shrimp |
| Kaguwa | Kuturu | Shark |
| Piranha | Bakin teku | Stingray |
| Gizon gizo -gizo | Fara | Katon kifi |
| Sturgeon | Shrimp | Kawa |
| Silverside | Hippocampus | Squid |
| Kifin teku mai kafa takwas | Salamander | Tekun teku |
| Eel | Bakin teku | Croaker |
| Sardin | Ruwa | Mussel |
| Barracuda | Mollusks na ruwa | Gizon tsutsa babba |
| Karfi | Tintorera | Tsutsar wuta |
| Mojarra | Kwankwasa | Gudun ruwa |
| Kullun ruwa | Duba | Hake |
- Ci gaba da: Dabbobi da numfashin tracheal
