Ichthyology Homework

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Name (Please use your real name) Email
1. 

There are more different fish species than the combined total species of reptiles, amphibians, mammals and birds.

2. 

Scientists believe that fish were the earliest vertebrates, and that all other vertebrates evolved from fish.

3. 

Which natural grouping of fishes includes sharks and rays?

4. 

Which natural grouping of fishes includes the majority of fish species?

5. 

What is the approximate number of fish species that have been identified worldwide to date?

6. 

How many freshwater species of fish have been identified in Texas?

7. 

____________ fishes are those that live and feed on or near the bottom of seas or lakes, while ____________ fishes are those that live and feed away from the bottom in the open water column.

8. 

The function of a swim bladder in ray-finned fishes is to:

9. 

_____________ fishes such as salmon migrate between fresh and marine water during different stages of their lives.

10. 

Choose all that apply: Humans harm fish populations by ____________.

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September 2, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 3, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
NTMN August Chapter Meeting- Wednesday, September 3rd- Prairies and Pollinator Gardens: Three Stories The committed naturalist wages a daily battle against the tide of urban...
John Bunker Sands Wetland Center || 1st Saturday Walk & Talk Bird Tour (AT) Saturday, September 6, 2025  ||  7:30am – 9:30am   CT Description:  Join...
September 6, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
Dogwood Canyon Audubon Center || 1st Saturday Bird Walk   (AT) Saturday, September 6, 2025  || 8:30am – 9:30am   CT Description:  Join us for a morning...
Heard Museum || Guided Trails (AT) Saturday, September 6, 2025  |  9:30am – 10:30am CT Description: Experience the ecology, geology, flora and fauna of the...
LLELA || 1st Saturday Nature Walk (AT) Saturday, September 6, 2025  ||  10am  – 12noon   CT Description:  Animal tracks, deer trails, singing birds, trees with...
LLELA || Harvest Moon Night Hike (AT) Sunday, September 7, 2025  ||  7:30pm  – 9:30pm   CT Description:   Join us for an illuminating evening as we trek...
September 9, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 10, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
September 13, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 13, 2025    
8:00 am - 11:00 am
Event Name: Trail Maintenance Date/Time: Every Second Saturday of the month from 8am to 11am. Except for July and November. Address: 367 Freeport Parkway, Coppell, TX 75019...
Heard Museum || 2nd Saturday Bird Walk (AT) Saturday, September 13, 2025 ||  8am – 9:30am CT Hosted by the Heard & offered by volunteers...
Trinity River Audubon Center || Second Saturday Guided Hike(AT) Saturday, September 13, 2025  |  8:30am –10am   CT Description: Join us for a guided hike led...
September 13, 2025    
9:00 am - 11:00 am
Preservation Society for Spring Creek Forest “2 nd Saturday” workdays Sept. 2025/ May 2026 Sept. 13, 2025, 9-11am: -- 1770 Holford Road (the center section...
Dogwood Canyon Audubon Center || Guided Tree ID Walk   (AT) Sunday, September 14, 2025  || 11am – 12:30am   CT Description:  Join us for a guided...
September 16, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 17, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
Heard Museum || 3rd Thursday Bird Walk (AT) Thursday, September 18, 2025 ||  8am – 9:30am CT Description: 3rd Thursday Bird Walks in the Heard...
Event Name: Paschall Park Butterfly Trail Workday (VH) Date/Time: Friday September 19, 2025, 730-10am Address: Paschall Park Butterfly Trail, 1001 New Market Road, Mesquite, 75149...
Trinity River Audubon Center || Morning Bird Walk (AT) Saturday, September 20, 2025  ||  7:30am  – 9am   CT Description: Join us for a monthly bird walk...
Prairie & Timber Audubon Society Field Trip || Birding the Joppa Preserve (AT) Saturday, September 20, 2025  ||  7:30am – 10:30am   CT Topic: Birding the...
Project site name changed to Prairie Creek Marsh and Wildscape (formerly Canyon Creek) Monthly workday 1001 G. Bush Freeway ( Hilton Garden Inn) Every third...
September 20, 2025    
8:00 am - 11:00 am
8th Annual World Cleanup Day Dallas ONE DAY, 211 COUNTRIES, 114 MILLION VOLUNTEERS Join us for the biggest World Cleanup Day ever! Saturday, September 20th...
September 20, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 21, 2025    
12:00 pm - 1:00 pm
Blackland NPAT Speaker Series (AT) Sunday, September 21, 2025    12:00 PM – 1:00 PM The Native Prairies Association of Texas Blackland (Dallas) Chapter invites you...
September 23, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
September 24, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
Paul S Dryer Nature Preserve || Field Trip (AT) Thursday, September 25, 2025 | 10am – 11:30pm    CT Free Description This will be a 2.5...
September 27, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
Wings Over the Wetland (2025)  Date/Time: Saturday, September 27, 2025 (Event: 4:30 - 9:00 p.m.; Volunteers: 4:00-9:30 p.m., or e-mail for earlier) Address: 655 Martin Lane, Combine, Texas...
Tandy Hills Prairie Sky/Star Party (FYI) Saturday, September 27, 2025   7:00 PM or after dark The Fort Worth Astronomical Society presents their Saturday star party...
September 30, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
October 1, 2025    
9:00 am - 12:00 pm
Western Heights Cemetery Volunteer Day 1617 Fort Worth Ave. Callas, TX 75208 Contact lead: Van Johnson, vanindallas2@aol.com Every Weds, 9am  - 12pm, earlier during summer...
Leaf Your Yard Wild: What’s Happening Under Autumn’s Blanket? The Xerces Society spearheaded a social media campaign with the “leave the leaves” slogan. Essentially, they...
Name: Blacklighting at the Brookhaven Pollinator Garden Date and Time: Wednesday, October 1 8:45 p.m. to 11 p.m. (directly after chapter meeting) Location: Brookhaven Windmill Pollinator Garden Map...
John Bunker Sands Wetland Center || 1st Saturday Walk & Talk Bird Tour (AT) Saturday, October 4, 2025  ||  7:30am – 9:30am   CT Description:  Join...
October 4, 2025    
8:00 am - 10:00 am
Name: Friends of Oak Cliff Workday Date & Time: Every Tuesday and Saturday 8am-10am Location: One of the three parks in Oak Cliff: Kidd Springs,...
Dogwood Canyon Audubon Center || 1st Saturday Bird Walk   (AT) Saturday, October 4, 2025  || 8:30am – 9:30am   CT Description:  Join us for a morning...
The Moon and Nature at Night at Twelve Hills (AT) Saturday, October 4, 2025   7:00 PM – 8:30 PM Take a guided, full-moon walk and...
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