Is My Betta Fish Too Skinny?

Betta fish are great, especially if you want a pet that doesn’t require much work. They are really easy to take care of for the most part – but they can also be hard to diagnose when they’re sick.

One of the most common causes for worry is whether or not your betta fish has lost weight due to illness. This article will discuss what signs indicate that your betta fish is too skinny and how you should treat them accordingly!

Is My Betta Fish Too Skinny?

Your betta fish is too skinny if it has lost more than a third of its body weight. This is a serious issue that needs to be addressed immediately.

Your betta fish may not be eating enough if they are too skinny. However, this isn’t usually the case because most betta fish will eat until full (unless you aren’t putting enough food in their tank). The truth is that an underweight betta fish can be due to a number of factors, including:

  • Poor diet
  • Parasites
  • Infection

The Health Implications of an Underweight Betta

There are a number of health implications that come with an underweight betta fish. These implications are not too dissimilar to what happens with humans when they lose too much weight.

Loss of protein is the biggest issue that will come with an underweight betta fish. Protein is important for many bodily functions, including muscle growth and repair (so if your muscles are weak or wasting away due to illness, you won’t be able to work out how normal). Not only this but

The most common issue is malnutrition, which can lead to a host of other issues in the future – including blindness and organ failure!

An underweight betta is also more susceptible to disease and infection, which could result in your betta succumbing to fishy heaven. As such, it is crucial that you address any weight loss immediately and take steps to help your betta gain back the weight they’ve lost.

How to Tell if My Betta Fish Has Eaten Enough?

If you’re not sure if your betta fish is eating enough, there are a few things you can look out for.

The most obvious sign is that your betta will become bloated and have a rounder stomach. This bloating should last for a few hours and then go back to normal. Long tern bloating is a cause for concern and you should take your betta to the vet.

Another sign that your betta is eating enough is if they have a healthy coat of scales and are swimming around happily in their tank.

If your betta is desperate for more food, then there’s a good chance. you haven’t been giving your fish enough food, so you’ll need to increase the amount you’re putting in their tank.

It’s recommended to feed a betta twice a day, but you can feed an underweight betta 3-4 times a day to help them gain weight quickly. Frequent feeding is also a good way to make sure your betta doesn’t become malnourished in the first place.

How to Make My Betta Fish Gain Weight?

If your betta fish is underweight, then there are a few things you can do to help them gain weight.

The first thing you’ll want to do is put more food in their tank for at least three days straight. Make sure that it’s high quality and well-rounded so that they have all the nutrients they need!

You can also try feeding them live food, like brine shrimp or bloodworms. This will give them the protein they need to bulk up and gain weight. It’s also a fun way to get them to eat more!

If your betta fish is still not gaining weight, you may need to take them to the vet for a check-up. There could be an underlying issue that’s preventing them from getting healthy again.


In conclusion, if your betta fish has lost more than a third of their body weight, then it’s time to take action!

A skinny betta is not healthy, so you’ll need to do everything you can to get them back to their normal weight. This may include increasing the amount of food you’re giving them and feeding them live food.

Make sure you are providing them with a high-quality diet and plenty of food. If they are still not gaining weight after a few days, then you may need to take them to the vet for a check-up.

I hope this article was helpful. If you have any questions, please feel free to leave a comment below. Thanks for reading!