题目选项分析

Even though vegetable meal is nutritious to fish and less costly to use than anchovy meal, most fish farmers feed their fish only anchovy meal because fish prefer its taste and consequently gain weight faster. Farmed fish would gain weight faster still on a diet consisting of a new seafood product, but this diet's advantages did not compensate its additional cost. Nevertheless, the product's developers predict that their product will be a commercially successful food for farmed fish. Which of the following, if true, most helps to justify the developer's prediction?

【选项】In the wild, fish of the species that are commonly farmed have diets that are more similar to in composition to the new product than to anchovy meal.