Archer-fish has evolved a most

English as a Second Language English Vocabulary, Grammar and Idioms
1

Archer-fish has evolved a most ingenious method of obtaining its prey, which consists of flies, butterflies, moths, an other insects.
How a method can consist by a name list of insects?

2

The list is describing the type of prey, not the method of catching it.

The sentence should read: “The archer-fish has evolved a most ingenious method of obtaining its prey, which consists of flies, butterflies, moths, and other insects.”