The Northland mudfish (Neochanna heleios) is a galaxiid of the genus Neochanna, found only in swampy locations west of the Bay of Islands in Northland, New Zealand. Its length is up to .
In 2026, the Northland mudfish won the New Zealand Fish of the Year competition.
Etymology Heleios means "marsh dwelling". Neochanna is a compound word of neo, meaning new, and channa, meaning anchovy.
References
NIWA June 2006 Royal Society of NZ