Pescatarian is vegetarian plus fish and seafood — no other meat, but salmon, prawns, tuna and the rest stay in play. It's an easy diet to undersell: adding fish back in solves the one thing plant-and-dairy-based eating structurally struggles with, which is omega-3s (plants give you a precursor form, but oily fish gives you the useful kind directly). It's a small swap with a real nutritional payoff, not just a personal preference.
The catch is that "eat more fish" only works if it's actually in the plan, otherwise it just turns into vegetarian-with-extra-steps and the fish never shows up. This planner builds a pescatarian plan around your calorie and protein targets and can track an omega-3 target alongside it, then generates the shopping list so the fish is bought, not just intended. Set your diet to pescatarian above and just try it — the omega-3 benefit only really lands if the fish makes it onto the plate.