Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to breed livebearing tropical fish [title] Select the species you would like to breed. [step] Several varieties of livebearers are available from most pet stores, including guppies, platies, mollies, swordtails, and endlers. All of these have similar needs.

Ending1: Figure out your fish's specific needs before breeding them so that you can breed them together. [substeps] Some types of livebearers-birds, shrimp, turtles, amphibians-live in tropical environments. Ending2: Choose several livebearers based on your needs, regardless of what type of fish you choose. [substeps] To choose multiple livebearers, inspect the specific species you would like to breed to figure out the potential cost. Ending3: Choosing the species that best meets your needs will help you make the best use of your time. [substeps] Tropical livebearers are approximately 7.8 feet (2.7 m) in length. Ending4: Whichever variety you select, ask for a 50/50 mix of males and females. [substeps] Livebearers will do well in a standard 20-30 gallon tank setup.

Answer format: ending1/ending2/ending3/ending4