A 3 oz (85 g) portion of cooked mussel contains 20g of protein and only 147 calories. It is rich in iron, manganese, phosphorous, selenium, zinc and vitamins C and B12.
i have had the odd one go like this when kept with turtles
i think one of the turtes may have had a go at it, scratched the mucus layer or deeper
then the columnaris has grown on there
the fine lines on the bottom of goldfish in picture look similar to claw marks on mine with same problem
just an observation
just got to sit and wait for a fine day and there might be something to see in thuse outdoor enclosures
hasn't taken long for leopard gecko price to come down