if they all had fluid my next recommendation would be to change the clutch slave cylinder and possibly the clutch master cylinder
but you might want to bleed the clutch line FIRST, just in case its an air bubble, which is actually pretty common

the two reservoirs closer to the left are braking system, the leftmost being the ABS pump.

the rightmost is the clutch fluid

above that, we start getting into more serious things like tranny problems, although with under 200k miles of competent driving a 4g H series tranny should still be fine

things to consider:
-has ANY work been done to the car recently?
-when was the clutch last changed?
-with the engine running and hood open, depress the clutch pedal and listen for any change of noise near the tranny housing, under the distributor, this will help indicate whether its a throwout bearing issue
-monitor the slave cylinder throw distance while having someone pump the clutch pedal, its under the starter, on the front of the tranny, right behind the radiator fan, it looks like a small metal cylinder with a rubber boot on the end, connected to a large fork extruding from inside the tranny.

~kris