In managing neoplasia in fish, what is a common treatment option?

Surgical removal is a common and effective treatment option for managing neoplasia in fish. Neoplasia, or the presence of tumors, requires a focused approach to ensure the well-being of the fish. When feasible, surgical excision of the tumor can alleviate discomfort, reduce the risk of metastasis, and improve the fish's quality of life. The procedure must be performed by a veterinarian experienced in fish surgery, considering factors such as the tumor's location, size, and the overall health of the fish.

In contrast, other management options listed, such as a complete water change, adding more plants, or increasing tank temperature, do not address the neoplastic growth directly. While proper water quality and environmental enrichment are essential for maintaining general health in aquatic environments, they do not resolve the underlying issue of a tumor. Thus, surgical intervention is the most appropriate and direct approach to treat fish with neoplasia.