Salty Q&A: Is My Lionfish Going Blind?

Question I have a volitans lionfish that’s been in my 200-gallon tank for over two years, and lately it has begun to act like it can’t see. At feeding times, it makes an effort to grab food that’s drifting by but usually misses—like it can tell that food is in the water but can’t see … [Read More]

Fish Disease Symptoms Aren’t Always What They Seem

Most marine aquarium hobbyists keep a close eye on their fish for certain tell-tale signs of ill health. And that’s a good thing, since quick intervention in the case of fish disease can often be the difference between life and death for the specimen(s). On the other hand, we do need to be cautious about … [Read More]

Treating a Sick Marine Fish? First Do No Harm!

When a fish in our care gets sick, it’s a perfectly understandable impulse to want to throw every cure we can lay our hands on at the problem. But sometimes rushing ahead with a medication or other treatment can do more harm than good. In the following excerpt from his book The Salt Smart Guide … [Read More]

Brooklynellosis (Clownfish Disease): A Subtle, Fast-Moving Killer

As with many illnesses that affect people, fish diseases often manifest themselves in the earliest—and most treatable—stages through subtle, easily overlooked symptoms. Further clouding matters, many fish diseases have certain symptoms in common and are, therefore, easily confused with one another, making accurate diagnosis difficult. Among the fish ailments that are easy to miss, mimic … [Read More]