How is the digestive system of a pike different from that of a trout?

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rainbow trout — protacanthopterygian Rainbow trout (*Oncorhynchus mykiss*).

The primary difference in the digestive systems of a pike and a trout lies in the presence of pyloric ceca.

In a trout, the digestive tract features a well-defined muscular stomach that opens into the intestine. Immediately posterior to the stomach, a series of fingerlike appendages called pyloric ceca branch off the intestine; these structures secrete enzymes and provide additional surface area for digestion.1

In contrast, the highly predacious pike (Esox) completely lacks pyloric ceca. While the trout utilizes gill rakers to strain small organisms from the water, the pike has evolved to be a specialized predator of other fish, possessing large caninelike teeth on its jaws and gill arches that facilitate the capture and consumption of larger prey.12