Heterodimer and homodimer with other IKAROS family members. Expression is strongest in the blood, gills and intestine. N-terminal zinc-fingers recognize and bind to the consensus Ikaros target site (5'-GGGA-3'), found in the promoter regions of immunologically relevant genes. C-terminal zinc fingers mediate homodimerization and heterodimerization. Belongs to the Ikaros C2H2-type zinc-finger protein family.