Does a Naturalistic Environment Reduce Stress in Aquarium Fish?

For today’s post, I’d like to elicit your thoughts on an interesting phenomenon I’ve observed in my aquarium, specifically involving an aggravating repetitive behavior exhibited until fairly recently by my pair of blue-throat triggerfish (Xanthichthys auromarginatus). Allow me to set the stage: I introduced the blue-throats to my 125-gallon about a year and a half … [Read More]

Are You in Tankmate Aggression Denial?

Fish wounds and injuries can result from a variety of different influences, with tankmate aggression being among the more commonplace. Unfortunately, hobbyists don’t always recognize this problem right away when it manifests itself. Jay Hemdal, Curator of Fishes and Invertebrates for the Toledo Zoo, explains why in the following excerpt from his book The Salt … [Read More]

When Piscine Personalities Collide: Incompatible Energy

When trying to determine whether different species of marine fish will cohabit peacefully in the same aquarium, we usually ask ourselves whether the combination will result in one fish eating another or whether interspecific squabbling is likely to be an issue based on disparate levels of territorial aggression. If we can answer “no” to each … [Read More]

Marine Fish Issues: When It’s Best to Leave Well Enough Alone

In most cases, issues affecting marine fish—diseases, behavioral issues, compatibility concerns, etc.—should be addressed and rectified as quickly as possible, lest small problems transform into much bigger ones. But there are some circumstances in which the best course of action is to take no action at all—or at least take a wait-and-see approach. Here are … [Read More]

Five External Stressors of Marine Aquarium Fish

Most marine aquarium hobbyists want to provide as naturalistic and stress-free an environment as possible for the fish and other livestock in their care, so they’re careful to maximize water quality, offer nutritious foods, promote compatibility among tankmates, aquascape appropriately, and so on. In other words, they put a lot of thought into what’s going … [Read More]

What to Consider When Keeping Toxic Marine Fish

Toxic marine fishes kept in aquariums present certain husbandry challenges that hobbyists should be aware of if they plan to purchase one. I’m not referring to fishes that possess venomous spines or deliver a venomous bite, such as lionfishes, rabbitfishes, and fang blennies, but to those capable of exuding toxins into the water with potentially … [Read More]