I still have no algea...will this effect me solving the puzzles and finishing the game??

Here's what happened: First my tribe fished until they got Coconuts=(level 2 farming). Then they stopped fishing and started harvesting the coconuts (they also started the [censored]=(level 2 construction) while they were still harvesting the coconuts. I had 8 villagers at that time.

Then they finished the [censored] and waited on the crops. At that time I had about 700 food stored. Since the coconuts were getting low, I made my tribe fish when food strage got too low below 300. Once the crops were ready, my tribe harvested the crops(scarecrow was also in place). My food storage is now about 2000.. and still growing, but there is still no algea. Since my tribe is harvesting crops there has been no need to fish anymore.

Is the algea necessary for the prosperity of my villagers?

YB