Predicted to enable 3'-5'-exoribonuclease activity. Predicted to be involved in exonucleolytic trimming to generate mature 3'-end of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA). Orthologous to human ERI3 (ERI1 exoribonuclease family member 3). [provided by Alliance of Genome Resources, Apr 2022]