Project to improve our research project - a camera stand for our fish behaviour light/dark preference tank.

1. PHONE STAND FOR
CONVENIENCE IN LIGHT-
DARK TANK
OBSERVATION
GARCIA, MATTHEW S. TECH Y

2. WHAT IS LIGHT-DARK TANK TEST?
Standardized methodology for assessing fish anxiety like behavior
More time spent in the white region = more eager to explore
More time spent in the dark region = less eager to explore, more wary of potential
predators

3. HOW DOES IT WORK?
- Fish are acclimatized inside the tank for 3 minutes
- The fish are restricted to the middle area with flaps
- The fish is then recorded swimming in the tank for 15 minutes

4. PHONE STAND
- For convenience
- Standard tripods might take too long to setup
- Standard tripods might be bumped out of focus every
after observation session
- Dimensions are already based on a pre-made tank so no
manual adjustments are needed in between observations

5. OLD DESIGN VS NEW DESIGN
- 2 mm Acryllic
- Body is 10 cm wide
- Base is 5mm
acrylic
Points of
Improvement:
- Body wobbles
- Doesn’t capture the
entire field of view
of the tank.
- Phone must be
portrait relative to
the tank
- 3mm MDF
- Body is 10 cm wide
- Base is made out
of 18mm plywood
Points of
Improvement:
- Phones with a height
beyond 15 cm will not
fit in the slot

6. Support plane perpendicular to main body plain to
minimize wobbling
Phone slot

7. Field of View encompasses both ends of the tank for unhindered
observation

8. SAMPLE FOOTAGE OF A LIGHT-DARK TANK
OBSERVATION
A little misalignment
but the field of view is
ok

9. PHONE SIZE SURVEY ON 5 RANDOM PEOPLE
(Phone slot height – 15 cm)
Phone 1: 13 cm
Phone 2: 13 cm
Phone 3: 15 cm
Phone 4: 16.5 cm
Phone 5: 17 cm
(all phone heights measured without case)
3/5 surveyed phones fit the slot height

10. THANK YOU FOR LISTENING!!