Personally between the two species lists - I would tend to recommend the second one(without the shark).
For most small benthic shark pups (i.e. Bamboo pups)- a large tank like a 240 gallon is too large - and they have trouble fining food while small. But the tank is also too small(too narrow) to house the shark as an adult.
Also your choices of tankmates for the shark is really bad. No Angels, Triggers, Puffers, or agressive Eels (like Tessies).
For most small benthic shark pups (i.e. Bamboo pups)- a large tank like a 240 gallon is too large - and they have trouble fining food while small. But the tank is also too small(too narrow) to house the shark as an adult.
Also your choices of tankmates for the shark is really bad. No Angels, Triggers, Puffers, or agressive Eels (like Tessies).
