H.R. 4596 is a plan to help save endangered fish in some rivers by giving the government and others a chance to work together and share money to keep the fish safe until 2031. They will also keep an eye on how much things cost and adjust the money they spend to make sure they can still get the job done.

The bill aims to help rare fish in parts of the Colorado and San Juan Rivers by giving money to programs that protect them. It says the government and others can share the costs, and it plans to keep this funding going until 2031, even including adjustments for inflation to cover rising costs.

The bill is like giving money to help save certain types of fish that are in trouble in two big rivers, changing how much money is given and who else can help with the money. It also tries to make sure there is enough money over the years, even if things get more expensive, to keep helping the fish.