Catfish are one of the most varied fish groups on the planet. I’ve spent hours digging through species profiles for this guide, and honestly, the range still surprises me. Some catfish fit in your palm. Others grow larger than a grown man. This guide covers 30 types of catfish, from tiny aquarium favorites to river…
If you have ever watched a loach dart across the substrate of a fish tank, you know why so many aquarists fall for these fish. I have kept a few types myself, and I still find their personalities more entertaining than most other bottom dwellers. They dig, they hide, they play tag with tank mates,…
Snails often get overlooked when people plan a fish tank. That’s a shame, because the right snail can clean algae, aerate substrate, and add real personality to your aquarium. I have kept freshwater tanks for years, and snails are usually the quiet workers nobody thanks. This guide covers 15 types of aquarium snails, what each…
If you keep a freshwater aquarium, chances are you have seen bladder snail eggs — small, jelly-like clusters tucked under a leaf or pressed against the glass. At first glance, they look almost invisible. Bladder snails (Physa acuta, also known as Physella acuta) are among the most widespread freshwater gastropods in the world. They are…
If you have ever kept a freshwater aquarium, there is a good chance you have encountered the bladder snail — often without even inviting it in. It arrives quietly, tucked inside a live plant or hiding in a water sample. Before you know it, you have dozens of them. I find the bladder snail fascinating,…
Pond snails belong to one of the most successful groups of freshwater invertebrates on the planet. They have survived for millions of years, and adapted to an enormous range of environments. This guide explores everything you need to know about pond snails: their biology, behavior, diet, reproduction, ecological importance, and their relationship with humans. Before…
Baby ramshorn snails are among the most frequently encountered creatures in the freshwater aquariums. They arrive unannounced, often hitchhiking as eggs on plant leaves or tucked invisibly into shipping water. Within weeks, what seemed like nothing became a population. For some aquarists, this is an unwelcome surprise. For others — particularly those who keep pufferfish,…
The reproductive biology of ramshorn snails is one of the primary reasons they are so widespread — and so frequently labeled a pest. A single egg clutch can contain up to 40 embryos. With multiple clutches laid per week and an incubation period as short as ten days in warm water, the population can quickly…
The ramshorn snail is one of the most recognizable freshwater gastropods in the world. Its distinctive flat, coiled shell — shaped like the curved horn of a ram — makes it immediately identifiable. It is found naturally across multiple continents and has established itself in virtually every corner of the freshwater aquarium hobby. What makes…
If you have spent any time in the freshwater aquarium hobby, you have almost certainly encountered the Malaysian trumpet snail. It is one of those animals that divides opinion sharply. Some aquarists call it an indispensable tank helper. Others consider it a pest that multiplies beyond control. Personally, I think the truth lies somewhere in…