Hello - so, I placed our ranchu outside in our tub during a WC and it was pretty warm (70 to 75 degress) He stayed outside for approx 35 mins. I noticed once I returned him back to his tank, the black on his tail fins and pectoral fins faded and are no longer the black color. Is this normal and did the sunlight affect this? Is it healthy for ranchus to get direct sunlight, or is it not necessary? If so, I wonder if I should keep our aquarium away from direct sunlight. Here are before and after pics: Thanks!!