Aslem (Assaɣ ussnan: Pisces) d yal aɣersiw yettekkan deg tegrawt n imuddiren igan d izun idurra dgi llan yakk iɣersiwen n waman imesqelqal ilan ifucken maca ur lin ara iɣfawen dgi llan iṭudan, Dɣa asenmel-a llan s ddaw-as (dges) timeɣlilin (Myxinidae) d usennur d ikerselman (Chondrichthyes) d iɣesselman (Osteichthyes) war tutut n tegrawin n iselman i negren ilan ɣer-sent assaɣ
Amur ameqran n iselman gan d it uffiɣen weẓɣal ayen yettaǧǧan taẓɣelt n tifekkiwin-nsen ad mgaraden s unect n teẓɣelt deg twennaṭ id yezzin yessen ɣas akken kra n iselman imeqranen i reddben s urmud meqqren am uweqqas amellal d ubaryun zemren ad aggẓen taẓɣelt yeflalen (ɛlayen) s agensu n tfekkiwin-nsent
