Yes, according to the relationship between organisms, the food chain can be divided into predatory food chain, scavenger food chain (predatory food chain) and parasitic food chain. (1) Predator food chain. It feeds on plants and the latter preys on the former. Like grass, rabbits, foxes and wolves.

(2) Carnivorous food chain (scavenging food chain). Refers to the food chain formed on the basis of broken food. Such as leaf fragments and microalgae-shrimp (crab)-fish-bird eater.

(3) parasitic food chain. Based on large animals, a food chain formed by small animals parasitic on large animals. Such as mammals-fleas-protozoa-protozoa-bacteria-viruses.