Seachem Laboratories Impulse 400 Multi-Function Aquarium Water Pump Puffer Fish They are named spiny eels

They are named spiny eels because of the spines on their dorsal fins

They are social creatures and do best when kept in groups of at least three

rock caves

and other natural behaviors

Seachem Laboratories Impulse 400 Multi-Function Aquarium Water Pump Puffer Fish They are named spiny eelsThe Impulse is a quiet, energy efficient, multi function pump. It is ideal for fresh and saltwater aquariums, protein skimmers, indoor fountains, water cooling and all similar submersible and inline applications which require energy efficient, ultra quiet performance. The Impulse is equipped with a synchronous motor and an advanced impeller, ceramic shaft and bearings (stainless steel on the Impulse 400), and an adjustable flow rate. Multi size hose