Adapted from Conover (1982) showing the prey, competitors and predators of tintinnids. Tintinnids feed on small prey and are fed upon by a variety of organisms. A-diatom, B-phytoflagellate, C-Ceratium dinoflagellate, D-gymnodinid dinoflagellate, E-cynaobacteria, F-dinophysid dinoflagellate, G-clump of cyanobacteria, H-heterotrophic bacteria, I-detrital particle, J-heterotrophic nano-flagellate, K-detrital particle, L-small chaetognath, M-tintinnid cilate, N-dinospore from parasite infection of tintinnid, O-copepod nauplius, P-tunicate, Q-copepod, R-large chaetognath, S-Ctenophore, T-larval fish, U-adult fish.