Water Bug Vs. Cockroach: Explore The Difference

water bug kills fish

Do bugs that look like a cockroach scare you? A lot of crawling bugs and beetles can look like a cockroach, and this may be because they share common characteristics. One of them would have to be the water bug. At first glance, this insect does look like a cockroach unless you know better.

Some of these bugs are actually quite dangerous. Aside from causing life-threatening illnesses, there are a few of them that can actually cause painful bites. A lot of people get confused when it comes to the water bug and the cockroach. As a matter of fact, they are often mistaken for each other.

Being able to know the difference between the water bug VS the cockroach is quite important simply because it will help you know what to do if you happen to find one in your home. It should be wise to take note that cockroaches can pose a different risk than the water bug.

When it comes to differentiating the water bug and the cockroach, you should first know that they actually have a lot of similarities, this is why they can confuse many people. They do have a lot of differences, the problem is that they are not easily determined without the help of careful observation.

The Basic Difference Between Two Nasty Bugs

Water bug vs cockroach

Water Bug VS Cockroach

In the water bug vs cockroach comparison you will find that the two bugs can actually refer to so many other bugs. There are 4,000 species of cockroaches, and there are also 1,500 species of water bugs all over the world. A water bug is a type of cockroach, but the main difference between the two is that water bugs love to stay on fresh water or on the water surface.

While cockroaches will scurry all over the house at night in search for food on the floor, in the pantry, or behind the cabinets, the water bug will most likely stay where there are lots of water. They also tend to stay outdoors unless there is a leak or if there is a pool of water in the bathroom or basement.

Another difference is with their diet. The cockroach will try to eat whatever is available for them to consume. They will try to eat spoiled food or anything that is already rotting. The water bug on the other hand is predatory, they will try to kill and eat other insects, small fish, and even frogs.

Other Important Differences You Need To Know About

water bug

Although they look very much alike, one thing that you should know is that these two bugs have very different temperaments. Cockroaches are not aggressive and oftentimes, they scurry away as soon as the lights are turned on. Unfortunately, this is not the case when it comes to the water bugs.

Water bugs are actually aggressive and they will not hesitate to bite you. If humans are too near their environment, they will try to attack you. Water bugs like the toe-biter for example, will do exactly what its name says. It will bite your toes if you get too near them.

Cockroaches can invade your home and they can spread diseases simply because they carry bacteria around them. The water bug on the other hand, will stay in the habitat that it chooses, if you provoke them or if you unknowingly invade their space, they will try to bite you for the intrusion.

Another difference is that when it comes to getting rid of the cockroach, you will need to bait it and also do extensive cleanups in your home. You will need to focus on getting rid of dirt, clutter, and trash in order to control cockroaches. Cleaning water sources is what is needed to remove water bugs.



Knowing the difference between a water bug and a cockroach can sometimes be a lifesaver. The moment you identify what type of bug it is, you will then be able to decide what to do. If you see a cockroach for example, you might want to use gel bait, and start cleaning up the house.

On the other hand, if you spot a water bug in the swimming pool, you might want to keep everyone away from it until you can get rid of it properly and make sure that there are no other water bugs around. You should also consider checking other areas of the home that has a lot of water.

When dealing with both bugs, keep in mind that aside from their differences, one similarity that you need to know about them is that they can both multiply rapidly. They can cause infestations when you least expect them and you might need to get help from an exterminator if necessary.

Do you sometimes find it hard sometimes to differentiate cockroaches from water bugs? Share your story with us at the comments section below.

About the Author Emily Taylor

My name is Emily Taylor, gardening is my passion and I’m looking forward to sharing it with everyone. I know that there are millions of people out there want their backyard and garden be attractive just like their front yard, so I am here to help you create your own backyard paradise.

Leave a Comment:

Pin It on Pinterest

Share This