A pair of neon gobies (Elacatinus oceanops) was always on my wishlist for fish, though I am beginning to question whether I should purchase them given their relatively short lifespan. Is it true that they only live between 1-2 years old, or would they live longer in a captive setting? If it's true that they do not live for very long, are there any similar-looking alternatives that would live longer, like other species of Elacatinus? I'm not looking for another cleaner animal (I already have two cleaner shrimp, Lysmata amboinensis and Lysmata debelius) and my display tank is a 40-gallon planted marine tank.
Future tankmates include, though are not limited to:
Chromis cyanea (x1) (already in quarantine)
Chromis viridis (x1) (already in quarantine)
Ecsenius stigmatura (x1) (already in quarantine)
Gobiesox punctulatus or Gobiesox strumosus (x1)