Jeffrey is Ant Nekton's intelligent pet Yellowback Basslet. Jeffrey uses various water tubes to travel throughout the Aronnax. Whenever traveling outside the Aronnax, he may also goes with Ant on his "Jorange", a portable fish-tank.
Obviously, don't nominate any human characters. Hybrids like Cheetah or The Lizard are okay, as are shapeshifters with one set animal form (eg Professor McGonagall.)
