How long is the longest food chain in this food web? (i.e., the one with the most "links")?

Black-crowned night-heron. This predator is adapted to hunt at night. In the French Guiana this is one of the major night heron species with its cousin the Yellow-crowned night-heron (Nycticorax violacea). Feeds mainly on aquatic animals, including fish, amphibians and insects. Coastal swamps.

A nucleus

The nucleus contains all genetic information