Yes! The manufacturer claims that this product is vegan, making it suitable for pescatarian eaters as well.

Is Guava Gourmet Variety Pack - Guava Jam and Marmalade (12oz jars) Fresh Tropical Fruit: All-Natural, Non-GMO, Vegan, Gluten and Cholesterol-Free, No Fillers or Preservatives, Kosher Pescatarian?

Yes! The manufacturer claims that this product is vegan, making it suitable for pescatarian eaters as well.
Pescatarian? Guava Gourmet Variety Pack - Guava Jam and Marmalade (12oz jars) Fresh Tropical Fruit: All-Natural, Non-GMO, Vegan, Gluten and Cholesterol-Free, No Fillers or Preservatives, Kosher | Spoonful