Figure 4: Branchial arch angle did not significantly affect the total mass of particles retained by cross-step models.
From: Fish mouths as engineering structures for vortical cross-step filtration

Mass of Artemia cysts retained by models with branchial arches angled at 110°, 90° or 55° along the midline of the oral cavity roof (one-way ANOVA; P=0.48; n=5 models for each angle).