In a sea where fish don’t just swim, but dance and dazzle, bubble fish take center stage as the aquatic equivalent of pop ...

Add the leftover vegetables and crush, then stir through the smoked fish. Heat through for three ... Heat a non-stick pan and add some oil. Fry the bubble and squeak until golden-brown all over.

As latest evidence exposes higher mercury levels in tuna, a nutritionist takes a look at the variety of tinned fish on offer ...