nice looking eel! Mine seemingly went on a 6 month hunger strike and stopped taking earthworms, krill, or anything else. However, he now takes fish fillets and prawns. Just be patient and he'll soon eat anything.
Mine all grew approx 1" per month the first 2yrs I owned them but hear they can and will grow that approx for the first 3 yrs. so 12" per year isn't unheard of.