A fish curry masala's ingredients include coriander, cumin, chilli powder, and turmeric as a base, with other spices like fenugreek, ginger, garlic, black pepper, and sometimes fennel and mustard seeds. A flavor base typically also uses onions, tomatoes, curry leaves, and sometimes coconut milk or paste. The specific spices and proportions can vary by regional cuisine and personal preference, with ingredients like garam masala, dry red chilies, and asafoetida (hing) used to add complexity and depth.