Actually earthworms have a high crude protein content. See this chart.Pyramid_Party;2454477; said:I think nightcrawlers/earthworms are mostly water
Best for purely predatory fish in sparse feedings but not for herbivores and most omnivores. You'll want less than 38% crude protein for herbivores.Pyramid_Party;2454510; said:Cricket/earthworm/nightcrawler seem to be the best.