One is outdated standards, says Wong Tze-wai of the Chinese University of Hong Kong.

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Tze, 34, is the managing director of Aquacopia, an investment firm providing venture capital to fish farms.

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Tze's response: If we don't make this work, there won't be anything left on the sushi menu.

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Tze's biggest catch, he says, could be Oberon FMR in Idaho Springs, Colorado.

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Those numbers got the attention of Jared Polis, Tze's undergraduate pal from Princeton.

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Tze had worked at an online marketplace for the oil and gas industry and at a series of what he called "exhilarating disasters" in e-commerce.

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"There is no professional money invested in early-stage aquaculture, " says Tze.

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Now Tze, Aquacopia's only full-time employee, navigates the fund, which has minority stakes in five holdings, and charges investors 2.5% on assets under management, plus a 20% cut of the capital gains.

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Grabbing sushi with David Tze is frustrating.

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Tze Chun, a 28-year-old in Brooklyn, N.

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