Quick answer on hybrid size
A redtail shovelnose hybrid is a cross between a redtail catfish and a tiger shovelnose catfish. There is limited reliable published data on hybrids specifically, so exact adult sizes are uncertain. As a rule, expect a fish in the range of its parents: a very large predator measured in feet, not inches. Anyone buying a small juvenile should plan for a fish that outgrows almost any home aquarium.
Parent species sizes
Retail and hobby sources describe the parents like this:
- Redtail catfish: Can grow beyond three feet and are usually recommended for tanks of 300 gallons or more.
- Tiger shovelnose catfish: Typically described as around two to three feet, more active swimmers, recommended for tanks of roughly 250 gallons or more.
Hybrids do not follow a guaranteed formula, so some may be at one end of the range or beyond. Wild and pond or public aquarium specimens can also differ from home aquarium fish, which are often stunted by space limits.
How fast do they grow
How fast does a tiger shovelnose catfish grow? Both parents are known as fast growers when fed well in large volumes of water, often adding noticeable length in a matter of months when young. Rate depends on feeding, temperature, water quality and space. Growth slows as the fish matures.
How long to reach full size
How long does it take for a red tail catfish to get full size? Hobbyist reports often mention several years, with the fastest growth in the first year or two. Because there are few verified records, treat any quoted timeline as a rough estimate. Cramped tanks can restrict growth, but that is not a healthy way to keep a fish, and it shortens lives.
Tank size needs
For adults, plan for the same tank sizes as the parents: several hundred gallons at minimum, with a long footprint so the fish can turn. Many keepers end up using ponds, custom tanks or giving the fish away when it outgrows its home. Add strong filtration, since these fish produce a large amount of waste. A juvenile in a standard tank is a short-term arrangement only.
Feeding and water quality
They are carnivores. Foods commonly used include high-protein pellets, frozen foods and occasional live items, but heavy feeding means heavy waste. Forum advice from experienced keepers also stresses these points:
- Use a liquid test kit rather than strips.
- A nitrate reading of zero in an established tank is suspicious and worth retesting.
- Stress can come from poor water, no hiding place, bullying, low oxygen, large swings in parameters or too little space.
- Regular partial water changes are essential.
A newly purchased fish may take a week or two to start eating, which is not unusual.
Tank mates
Keep these fish only with companions too large to fit in the mouth. Experienced keepers warn that small fish, such as loaches, will sooner or later become food. Even peaceful-seeming predators will swallow what fits. If you prefer peaceful, smaller catfish with simple needs, see the stone catfish care guide or the manageable petricola catfish.
Price and availability
What is the price of a tiger shovelnose redtail catfish hybrid? Prices vary widely with size, seller and region, so check current listings. Remember the cost of the fish is small next to the cost of a large tank, filtration and long-term feeding.
Is it a realistic home pet
For most hobbyists, no. Retail guidance describes both parent species as unsuitable for beginners and best for experienced keepers. If you cannot house a fish of three feet or more for its whole life, consider a smaller species instead, such as the cuckoo catfish.
FAQ
How big does the hybrid get? Likely in the multi-foot range, though verified hybrid data is limited.
Can I keep one in a 100 gallon tank? Only as a very short-term arrangement for a small juvenile.
What can live with it? Only large, robust fish that cannot be swallowed.