I am getting some great video of the blackfish in the aquarium recently , he has gotten used to me being around and will feed while I watch .

In this video we see him take a yabby on the second bite and then struggles to find his pipe I think because the lights in the container where on .

[wpvideo zCAVX8iv]

We can safely say that you would not want to be a yabby anywhere near a blackfish.

i am stunned that their growth rates are so slow ( given the food this one eats) perhaps the lack of high protein food such as yabbies and moths in their natural enviroments  are a factor.

I am going on a field trip to Tassie soon and we know that Gadopsis marmoratus grow to much larger sizes down there( up to eight kilos) and we also know that they have access to much bigger crustaceans, it will be interested to see for myself hat foods are availiable.