The lateral line sense organ is a specialized system found in many aquatic animals that allows them to detect water movement and vibrations in their surroundings. It is used for various purposes, such as detecting predators, prey, and obstacles in the water.

Option 1: Labeo - This is a type of fish, and fish generally have a lateral line sense organ. Therefore, it is unlikely that Labeo is devoid of this organ.

Option 2: Catla - Similar to Labeo, Catla is also a type of fish. It is unlikely that Catla is devoid of the lateral line sense organ.

Option 3: Seahorse - Seahorses are unique creatures, but they still live in water and rely on water movement and vibrations for survival. Therefore, it is unlikely that Seahorse is devoid of the lateral line sense organ.

Option 4: Magur - Magur is a catfish species commonly found in Asia. Like other fish, it is likely that Magur possesses the lateral line sense organ.

Given the options, the correct answer is option 3 - Seahorse. However, it is worth noting that this answer may not be entirely accurate. Seahorses have small sensory pores along their bodies, which can be considered a modified form of the lateral