Tag Archives: Fish Facts

Some interesting killifish facts include the fact that there are more than 1,000 species of killifish, as well as the fact that annual killifish only live for up to 9 months.

admin    January 29, 2019   CATEGORY: Fish Facts

Freshwater Life: Killifish Facts

Despite its deceptive name, the killifish is one of the most peaceful freshwater fish. In addition to its calm demeanor, the killifish also is less fussy than some other aquarium fish. As if that’s not enough to make it popular among hobbyists, it also adds brilliant color to a fish tank. The main problem with them is that they probably won’t live as long as some other fish. If you’re considering obtaining one for your home aquarium, following are some basic killifish facts that will help you.

12 Killifish Facts You Should Know

1. Although they’re very peaceful, like many other fish, they can be competitive with other fish of the same gender and breed during mating season.

2. There are more than 1,000 species of killifish.

Killifish are peaceful, beautiful, and easy to maintain in a freshwater aquarium. One of the killifish facts you should know, however, is that they have a short lifespan, no matter how well you maintain your fish tank.3. Annual classes of killifish live up to only 9 months. Semi-annuals can live up to three years, and non-annuals can live up to five years.

4. The largest is about six inches, while the average size is about 3 inches.

5. You should feed them live fruit flies, brine shrimp, mosquito larva, and worms. They can be fed frozen foods as well.

6. The male killifish has an interesting social life. He usually lives with several female fish. He has to chase them to spawn, but the females find places to hide.

7. Male fish are brighter than female fish – in appearance, that is. It’s not clear which sex is smarter, but we’re betting on the female based on point number 6.

8. They have one of the most peculiar mating habits of any fish. Some lay fish with hard shells inside the mud of swamps and other shallow bodies of water, but only at about two inches underground. Once the pond dries up, the eggs hatch after it rains. The parents, however, will usually have already died, so they won’t meet their babies.

9. Because they prefer cooler temperatures, hobbyists are more likely to have success with them if they are placed in their own tank. The temperature of the tank for killifish should be about 68 degrees, while the ideal temperature ranges from about 74 to 80 degrees for other types of freshwater fish. However, killifish tend to have a short lifespan regardless of how well you take care of them.

10. The largest family of killifish is Rivulidae, which consists of more than 300 species. Other families include Aplocheilidae, Cyprinodontidae, Fundulidae, Profundulidae, and Valenciidae.

11. They can help control algae growth in a fish tank.

12. They live everywhere in the world except Australia, northern Europe, and Australia.

Contact Us for More Information

The above are only some of the killifish facts you would need to know if you’re interested in owning one or more. Contact us for more information about how to create and maintain the best environment for them.

Contact Seatech Aquariums for fish tank maintenance in the greater Phoenix area.


TAGS: Fish Facts, Freshwater Aquarium, Killifish Facts,

How do fish drink water? Or do fish drink water at all? It's a question many people ask. The answer is different depending on if it is a freshwater fish or saltwater fish.

admin    January 19, 2019   CATEGORY: Fish Facts

How Do Fish Drink Water?

One question many people have asked is: Do fish drink water? Just like humans live in air and also breathe it, fish need to consume water to survive. How they get water into their bodies, however, is the interesting part.

Saltwater and freshwater fish take in water differently. They do need salt in their bodies to survive, but they can’t have too much nor too little. As a result, they naturally create a harmonious environment with the water around them through the process of osmosis.

Osmosis is based on the traveling of water across a membrane. For an optimal environment and to ensure the survival of the cells, osmosis must be regulated.

How Do Saltwater Fish Drink Water?

How do fish drink water? Although some fish do drink water, it's really based on the process of osmosis. An isotonic solution is one in which the level of salt is the same both inside and outside of the cell. In a hypotonic solution, there is more salt inside the cell than outside. Hypertonic refers to the level of salt being greater outside the cell than inside it.Saltwater fish take in water through their cells. In order to avoid taking in too much salt, however, they eliminate excess salt through their gills. In a normal environment, therefore, the bodies of saltwater fish are less salty than the water around them.

In other words, it’s saltwater in, saltwater out, all the time; saltwater fish constantly lose water out of their bloodstream through osmosis.

How Do Freshwater Fish Drink Water?

Freshwater fish maintain a higher level of salt in their bodies than the freshwater around them. Contrary to saltwater fish, freshwater fish are constantly gaining water into their bloodstream through osmosis. In order to eliminate excess water, they urinate frequently.

Does Water Get Into Fishes’ Mouths?

It’s natural that some water gets into fishes’ mouths. Once that water gets into a freshwater fish’s mouth, the water is directed out through the gills. Saltwater fish send some of the water that is coming in by their mouths through their digestive tracts and also over their gills.

What does all this mean regarding your fish tank? Most likely, if you regularly lose water from the tank, it’s due to evaporation. The fish aren’t really “drinking” large amounts of the water; instead, they’re circulating the water in and out of their bodies.

Contact Seatech Aquariums for fish tank maintenance in the greater Phoenix area.

TAGS: Fish Facts, fish tank, freshwater fish, saltwater fish,