Wow-a great topic, and kudos to you for thinking about your future. Your mom is right--- if you do what you love, you’ll love what you do, At some point you’ll be spending a lot of time working, so you may as well be happy while you’re there.
If you’re interested in Biology, Business and the outdoors there are a bunch of different ways you can go.
If you’re interested in fish, a good place to explore is the American Fisheries Society site. Here’s their job board, browse it to see qualifications for different jobs, and to get a sense of the work.
American Fisheries Society
The AFS also has chapters throughout the country, including Texas. Maybe you could work with your HS Guidance Counselor and Science teacher to “shadow” a professional fisheries biologist around for a couple of days to get a feel for what they do
Texas Chapter of the American Fisheries Society Home Page
Another way to get your feet wet and get a sense of what a job in Fish and Game might be like is to consider being a volunteer/unpaid intern. You could contact Lori at TPWF about opportunities for working at a hatchery, stocking fish stream or prairie restoration, bird banding or other wildlife work.
TPWD: Volunteer Opportunities in Texas State Parks
Or it might be possible to “shadow” a game warden, again working though your HS Guidance counselor, or arrange for a “information interview” with Colonel Flores or his office:
TPWD: Game Warden
Once you’re in college there are also opportunities for internships. In Texas there are opportunities with Texas Parks and Wildlife:
TPWD: Student Summer Internship Program Information
As well as opportunities like with the Federal government doing stuff like restoring native cutthroat trout in Yellowstone National Park (how cool is that?).
There are a ton of other career areas that build on a biology background including research and working in up and coming fields like genetics. In high tech start up companies that would make use of a background in business too. Many jobs will require advanced degrees (Masters and PhD), but here’s a link that will take you to a lot of info about other options for someone with an interest in biology:
Careers for Biology Majors
You can get the same sort of info on virtually anything by googling “careers in __(insert_whatever_floats_your_boat_here)___”
Finally, just keep in mind that you’re young, and the life will take you down many paths. If you would like to do a little exploring now, but really don’t know what you want to do, or what some of your options are, here’s a very good process to go through to see how your interests, skills, and values might match up with different careers.
Where Do I Go From Here? – 2008 MnCareers
If you’d like to explore some of those areas in more depth, here are some resources for career planning:
Career Choice - How to Make a Career Choice
And, your Dad may not want you to be a Doc, but you could always be a veterinarian. The patients are much nicer.
Hope some of this helps.
PS Actually, Alligator’s trout bum idea sounds pretty good right now.