Species: Xenopus laevis

Habitat: 22 degrees C Range (21-23) C

Day: 11 Stage 49

Photos taken from my iPhone


Resting and Resting with just tail moving, resting on their sides, little tadpole not moving

Swimming- In circles, around edges of container

Social behavior- isolation in corners , social resting, bumping into each other, larger ones avoiding smaller one, chasing one another,

Feeding- pushing the food

Response to light-resting

Jolting- swimming in circles fast

Added Magnet- one tadpole slowly moving towards magnet, moved away

Added a third tadpole other larger ones are avoiding

Added other 2 other tadpoles, they are all keeping to themselves, one hiding under magnet

Time Interval Observation Over a Span of 5 Minutes

Behavior 1 Minute 2 Minute 3 Minute 4 Minute 5 Minute
Resting xxxxx xxxxx xxxxx xxxxx xxxxx
Hiding xx x xx x x
Isolation x xxx xxx
Bumping x xx x x
Swimming xxx x x x
Rest With Tail Motion x

x= Number of tadpoles involved with a particular behavior at a time interval between 1-5 minutes.

-This was continuous sampling, and we had a pre-set time to observe in minute intervals.


Behavior Type Behavior Description
Feeding Nudging food



Pushing food around the dish


Swimming Circles






Swimming fast around in circles


When dish was moved or touched, the tadpole would jolt away


Swam slowly around dish with no direction


Resting Sitting


Tail Movement

Not moving, in one spot


Resting with only the tail moving

Social Behavior Bumping





Resting together

Would bump into others and then swim away


Would chase each other around the dish, sometimes after bumping


Will rest in one spot together



Question: If there are more tadpoles in the container are they more social with each other or do they try and stay isolated?

Hypothesis: Tadpoles are more social when they are in larger groups

Prediction: If tadpoles are more social when they are in larger groups, then they will have more interactions and be less isolated.


We started observing 3 tadpoles and they all seemed to be on opposite sides of the container isolating themselves. When we added 2 more, they had less space to swim around, therefore being forced to interact with one another (bumping, resting next to each other, chasing). This confirms that our prediction could be correct.


2 thoughts on “Tadpole Ethogram

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